Question
In an examination the average marks of Rohit is 62. If
he got 19 more marks in science and 26 more marks in maths then his average would have been 67. Find the total number of subjects he studied?Solution
Let total number of subjects be x. Then, => (62x + 26 + 19)/x = 67 => 62x + 26 + 19 = 67x => 5x = 45 => x = 9
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