{"id":234307,"date":"2025-06-14T04:09:19","date_gmt":"2025-06-14T04:09:19","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=234307"},"modified":"2025-06-14T04:09:21","modified_gmt":"2025-06-14T04:09:21","slug":"elmer-has-a-collection-of-300-fossils","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/14\/elmer-has-a-collection-of-300-fossils\/","title":{"rendered":"Elmer has a collection of 300 fossils"},"content":{"rendered":"\n<p>Elmer has a collection of 300 fossils. Of these, 21% are fossilized snail shells. How many fossilized snail shells does Elmer have?<\/p>\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>To find how many fossilized snail shells Elmer has, we are told that <strong>21%<\/strong> of his <strong>300<\/strong> fossils are snail shells.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 1: Understand the meaning of percentage<\/strong><\/h3>\n\n\n\n<p>A <strong>percentage<\/strong> is a way of expressing a number as a <strong>fraction of 100<\/strong>.<br>So, <strong>21%<\/strong> means:21%=2110021\\% = \\frac{21}{100}21%=10021\u200b<\/p>\n\n\n\n<p>This tells us that for every 100 fossils, 21 are snail shells.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 2: Multiply the percentage by the total number<\/strong><\/h3>\n\n\n\n<p>To find how many snail shells are in a total of 300 fossils, we multiply:21100\u00d7300\\frac{21}{100} \\times 30010021\u200b\u00d7300=21\u00d7300100=6300100=63= \\frac{21 \\times 300}{100} = \\frac{6300}{100} = 63=10021\u00d7300\u200b=1006300\u200b=63<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 <strong>Final Answer:<\/strong><\/h3>\n\n\n\n<p><strong>Elmer has 63 fossilized snail shells.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcd8 <strong>Textbook-style Explanation (approx. 300 words)<\/strong><\/h3>\n\n\n\n<p>To solve a problem involving percentages, such as determining how many items fall into a certain category based on a percentage, we begin by converting the percentage into a fraction or decimal. In this case, Elmer has a collection of 300 fossils, and 21% of them are fossilized snail shells.<\/p>\n\n\n\n<p>Percent means \u201cper hundred,\u201d so 21% is equal to 21 out of every 100 fossils. To find out how many snail shells that corresponds to in a group of 300 fossils, we use multiplication. We calculate 21% of 300 by multiplying 300 by the decimal form of 21%, which is 0.21. However, we can also solve it more precisely by using fractions:21%=2110021\\% = \\frac{21}{100}21%=10021\u200bNumber&nbsp;of&nbsp;fossilized&nbsp;snail&nbsp;shells=21100\u00d7300\\text{Number of fossilized snail shells} = \\frac{21}{100} \\times 300Number&nbsp;of&nbsp;fossilized&nbsp;snail&nbsp;shells=10021\u200b\u00d7300<\/p>\n\n\n\n<p>When multiplying a fraction by a whole number, we multiply the numerator (top part) by the whole number and then divide by the denominator (bottom part):21\u00d7300100=6300100=63\\frac{21 \\times 300}{100} = \\frac{6300}{100} = 6310021\u00d7300\u200b=1006300\u200b=63<\/p>\n\n\n\n<p>Therefore, 63 of Elmer\u2019s fossils are fossilized snail shells. This method applies to any percentage problem\u2014multiply the total quantity by the given percent (as a decimal or fraction) to find the part of the whole.<\/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-banner5-519.jpeg\" alt=\"\" class=\"wp-image-234308\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Elmer has a collection of 300 fossils. Of these, 21% are fossilized snail shells. How many fossilized snail shells does Elmer have? The Correct Answer and Explanation is: To find how many fossilized snail shells Elmer has, we are told that 21% of his 300 fossils are snail shells. Step 1: Understand the meaning of [&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-234307","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/234307","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=234307"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/234307\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=234307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=234307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=234307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}