{"id":224095,"date":"2025-06-02T17:31:09","date_gmt":"2025-06-02T17:31:09","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=224095"},"modified":"2025-06-02T17:31:11","modified_gmt":"2025-06-02T17:31:11","slug":"a-car-is-traveling-70-km-in-45-minutes","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/02\/a-car-is-traveling-70-km-in-45-minutes\/","title":{"rendered":"A car is traveling 70 km in 45 minutes."},"content":{"rendered":"\n<pre id=\"preorder-ask-header-text\" class=\"wp-block-preformatted\">A car is traveling 70 km in 45 minutes. How many miles an hour is the car traveling? The conversion factor you will need for this question is: 1 mile = 1.60934 km About 60 miles per hour About 52 miles per hour About 50 miles per hour About 58 miles per hour<\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct choice:<\/strong> <strong>About 58 miles per hour<\/strong><\/p>\n\n\n\n<p><strong>Why that\u2019s the right answer (about 300 words)<\/strong><br>To compare the car\u2019s speed with the familiar \u201cmiles per hour\u201d (mph) scale, we must first express its speed in kilometers per hour (km\/h) and then convert those kilometers to miles.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">1 Find the time in hours<\/h3>\n\n\n\n<p>The trip lasts <strong>45 minutes<\/strong>.<br>Because 60 minutes make one hour: 45&nbsp;min\u2005\u200a=\u2005\u200a4560&nbsp;h\u2005\u200a=\u2005\u200a0.75&nbsp;h45\\text{ min}\\;=\\;\\frac{45}{60}\\text{ h}\\;=\\;0.75\\text{ h}<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2 Compute the speed in km\/h<\/h3>\n\n\n\n<p>Speed equals distance divided by time: speed\u2005\u200a=\u2005\u200a70&nbsp;km0.75&nbsp;h\u2005\u200a=\u2005\u200a93.3\u203e&nbsp;km\/h\\text{speed} \\;=\\;\\frac{70\\text{ km}}{0.75\\text{ h}}\\;=\\;93.\\overline{3}\\text{ km\/h}<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3 Convert kilometers per hour to miles per hour<\/h3>\n\n\n\n<p>The problem supplies the conversion 1&nbsp;mile=1.60934&nbsp;km1\\text{ mile}=1.60934\\text{ km}.<br>To get miles from kilometers, <strong>divide<\/strong> by 1.60934: 93.3\u203e&nbsp;km\/h\u2005\u200a\u00d7\u2005\u200a1&nbsp;mile1.60934&nbsp;km\u2005\u200a\u2248\u2005\u200a57.94&nbsp;mph93.\\overline{3}\\text{ km\/h}\\;\\times\\;\\frac{1\\text{ mile}}{1.60934\\text{ km}} \\;\\approx\\;57.94\\text{ mph}<\/p>\n\n\n\n<p>Rounded sensibly, that is <strong>about 58 mph<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4 Check against the answer choices<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>About 60 mph:<\/strong> a little high\u2014would require ~96 km\/h.<\/li>\n\n\n\n<li><strong>About 52 mph:<\/strong> too low\u2014corresponds to ~84 km\/h.<\/li>\n\n\n\n<li><strong>About 50 mph:<\/strong> even lower\u2014~80 km\/h.<\/li>\n\n\n\n<li><strong>About 58 mph:<\/strong> matches the 57.9 mph we computed.<\/li>\n<\/ul>\n\n\n\n<p>Therefore, \u201cAbout 58 miles per hour\u201d is the only option consistent with the calculation.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5 Why the rounding makes sense<\/h3>\n\n\n\n<p>Every real-world speedometer fluctuates slightly, and the given data (70 km in 45 min) is likely rounded to the nearest kilometer and minute. Presenting the answer to the nearest whole mile per hour preserves realistic precision without implying greater accuracy than the input justifies.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6 Rule-of-thumb shortcut (optional)<\/h3>\n\n\n\n<p>If you ever need a quick estimate, remember that 100 km\/h \u2248 62 mph. Since 93 km\/h is a bit less than 100 km\/h, its mph value must be slightly below 62 mph\u2014again pointing to the upper-50s.<\/p>\n\n\n\n<p>With the formal calculation and the mental check agreeing, we can be confident that the car\u2019s speed is <strong>about 58 miles per hour<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner4-156.jpeg\" alt=\"\" class=\"wp-image-224096\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A car is traveling 70 km in 45 minutes. How many miles an hour is the car traveling? The conversion factor you will need for this question is: 1 mile = 1.60934 km About 60 miles per hour About 52 miles per hour About 50 miles per hour About 58 miles per hour The Correct [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-224095","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/224095","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=224095"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/224095\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=224095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=224095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=224095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}