{"id":6876,"date":"2021-10-21T21:37:20","date_gmt":"2021-10-21T16:07:20","guid":{"rendered":"https:\/\/mathemerize.com\/?p=6876"},"modified":"2021-10-25T09:35:03","modified_gmt":"2021-10-25T04:05:03","slug":"a-student-obtained-75-80-85-marks-in-three-subjects-if-the-marks-of-another-subject-are-added-then-his-average-marks-can-not-be-less-than","status":"publish","type":"post","link":"https:\/\/mathemerize.com\/a-student-obtained-75-80-85-marks-in-three-subjects-if-the-marks-of-another-subject-are-added-then-his-average-marks-can-not-be-less-than\/","title":{"rendered":"A student obtained 75%, 80%, 85% marks in three subjects. If the marks of another subject are added then his average marks can not be less than"},"content":{"rendered":"

Solution :<\/h2>\n

Total marks obtained from three subjects out of 300 = 75 + 80 + 85 = 240<\/p>\n

if the marks of another subject is added then the total marks obtained out of 400 is greater than 240<\/p>\n

if marks obtained in fourth subject is 0 then<\/p>\n

minimum average marks = \\(240\\over 400\\)\\(\\times\\)100 = 60%<\/p>\n

\n

Similar Questions<\/h3>\n

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The mean and the variance of a binomial distribution are 4 and 2, respectively. Then, the probability of 2 success is<\/a><\/p>\n

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The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then, find the values of a and b?<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Solution : Total marks obtained from three subjects out of 300 = 75 + 80 + 85 = 240 if the marks of another subject is added then the total marks obtained out of 400 is greater than 240 if marks obtained in fourth subject is 0 then minimum average marks = \\(240\\over 400\\)\\(\\times\\)100 = …<\/p>\n

A student obtained 75%, 80%, 85% marks in three subjects. If the marks of another subject are added then his average marks can not be less than<\/span> Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[43,58],"tags":[],"yoast_head":"\nA student obtained 75%, 80%, 85% marks in three subjects. 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