{"id":33454,"date":"2025-06-23T08:48:52","date_gmt":"2025-06-23T08:48:52","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=33454"},"modified":"2025-06-23T08:48:53","modified_gmt":"2025-06-23T08:48:53","slug":"an-alloy-consists-of-30-zinc-45-nickel-and-the-rest-copper","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/an-alloy-consists-of-30-zinc-45-nickel-and-the-rest-copper\/","title":{"rendered":"An alloy consists of 30% zinc, 45% nickel, and the rest copper."},"content":{"rendered":"\n<p>An alloy consists of 30% zinc, 45% nickel, and the rest copper. Find the weight of copper in 800g of the alloy. Answer: 200g.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Correct Answer:<\/h3>\n\n\n\n<p><strong>200 grams of copper<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step-by-Step Explanation:<\/h3>\n\n\n\n<p>We are told that an alloy contains:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>30% zinc<\/strong><\/li>\n\n\n\n<li><strong>45% nickel<\/strong><\/li>\n\n\n\n<li>The rest is <strong>copper<\/strong><\/li>\n<\/ul>\n\n\n\n<p>The total percentage of the alloy is always <strong>100%<\/strong>. To find the percentage of copper, subtract the percentages of zinc and nickel from 100%:<\/p>\n\n\n\n<p><strong>Percentage of copper = 100% &#8211; (30% zinc + 45% nickel)<br>Percentage of copper = 100% &#8211; 75%<br>Percentage of copper = 25%<\/strong><\/p>\n\n\n\n<p>So, <strong>25%<\/strong> of the alloy is made up of copper.<\/p>\n\n\n\n<p>We are also told the total mass of the alloy is <strong>800 grams<\/strong>, and we are required to find the mass of copper in this alloy.<\/p>\n\n\n\n<p>To calculate the mass of copper:<\/p>\n\n\n\n<p><strong>Mass of copper = (Percentage of copper \u00f7 100) \u00d7 Total mass of alloy<\/strong><br><strong>Mass of copper = (25 \u00f7 100) \u00d7 800 grams<\/strong><br><strong>Mass of copper = 0.25 \u00d7 800 grams<\/strong><br><strong>Mass of copper = 200 grams<\/strong><\/p>\n\n\n\n<p>Thus, the mass of copper in the alloy is <strong>200 grams<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Additional Explanation:<\/h3>\n\n\n\n<p>Alloys are mixtures of metals or metals combined with other elements. The composition is often expressed in percentages, which helps determine the amount of each component in a given total mass.<\/p>\n\n\n\n<p>In this question:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Percentages must always add up to 100%<\/li>\n\n\n\n<li>Knowing the percentages of zinc and nickel allows us to easily calculate the percentage of copper<\/li>\n\n\n\n<li>Once we know the percentage of copper, finding its mass is a straightforward multiplication<\/li>\n<\/ul>\n\n\n\n<p>This approach can be applied to any similar problem involving percentage composition of alloys or mixtures, provided the total mass and individual percentages are given.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-513.jpeg\" alt=\"\" class=\"wp-image-33455\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-513.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-513-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-513-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>An alloy consists of 30% zinc, 45% nickel, and the rest copper. Find the weight of copper in 800g of the alloy. Answer: 200g. The Correct Answer and Explanation is: Correct Answer: 200 grams of copper Step-by-Step Explanation: We are told that an alloy contains: The total percentage of the alloy is always 100%. To [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-33454","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/33454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=33454"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/33454\/revisions"}],"predecessor-version":[{"id":33456,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/33454\/revisions\/33456"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=33454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=33454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=33454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}