{"id":1544,"date":"2016-11-23T13:36:59","date_gmt":"2016-11-23T05:36:59","guid":{"rendered":"http:\/\/people.utm.my\/hazinah\/?p=1544"},"modified":"2016-11-23T13:36:59","modified_gmt":"2016-11-23T05:36:59","slug":"mindworks-1-workings","status":"publish","type":"post","link":"https:\/\/people.utm.my\/hazinah\/2016\/11\/mindworks-1-workings\/","title":{"rendered":"Mindworks: 1 workings"},"content":{"rendered":"<p><span style=\"color: #0000ff\"><em><strong>The workings.<\/strong><\/em><\/span><\/p>\n<p><strong>There are 18 animals in a pet store.<\/strong><br \/>\n<strong>Some are birds and some are dogs.<\/strong><br \/>\n<strong>There are 50 legs in all.<\/strong><br \/>\n<strong>How many birds and how many dogs are there?<\/strong><\/p>\n<p>Say we set dog as x and bird as y. From the question we get:<\/p>\n<h4 style=\"text-align: left\"><strong>x + y = 18 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(Eq. 1)<\/strong><\/h4>\n<h4><strong>4x + 2y = 50 \u00a0 \u00a0(Eq. 2)<\/strong><\/h4>\n<p>Use these to find the value of x and y.<\/p>\n<p>From Eq. 1 we get : \u00a0<strong>x = 18 &#8211; y<\/strong><\/p>\n<p>Insert this into Eq. 2 : \u00a0<strong>4(18-y) + 2y = 50<\/strong><\/p>\n<p>Calculating that, we get :<\/p>\n<p><strong>72 &#8211; 4y + 2y = 50<\/strong><\/p>\n<p><strong>2y = 22<\/strong><\/p>\n<p><strong>y = 11<\/strong><\/p>\n<p>So, we have <span style=\"color: #0000ff\"><em><strong>11 birds<\/strong><\/em><\/span>.\u00a0Let&#8217;s use this value into Eq. 1, and we get:<\/p>\n<p><strong>x + 11 = 18<\/strong><\/p>\n<p><strong>x = 7<\/strong><\/p>\n<p>So, we have <span style=\"color: #0000ff\"><em><strong>7 dogs<\/strong><\/em><\/span>.<\/p>\n<p>Sorted!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The workings. There are 18 animals in a pet store. Some are birds and some are dogs. There are 50 legs in all. How many birds and how many dogs are there? Say we set dog as x and bird as y. From the question we get: x + y = 18 \u00a0 \u00a0 \u00a0 [&hellip;]<\/p>\n","protected":false},"author":619,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[59,89],"tags":[],"class_list":["post-1544","post","type-post","status-publish","format-standard","hentry","category-community","category-mindworks"],"_links":{"self":[{"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/posts\/1544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/users\/619"}],"replies":[{"embeddable":true,"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/comments?post=1544"}],"version-history":[{"count":0,"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/posts\/1544\/revisions"}],"wp:attachment":[{"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/media?parent=1544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/categories?post=1544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/people.utm.my\/hazinah\/wp-json\/wp\/v2\/tags?post=1544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}