Question
In an examination the average marks of Rohit is 63. If
he got 20 more marks in science and 28 more marks in maths then his average would have been 69. Find the total number of subjects he studied?Solution
Let total number of subjects be x. Then, => (63x + 28 + 20)/x = 69 => 63x + 28 + 20 = 69x => 6x = 48 => x = 8
More Average Questions
What will come in the place of question mark (?) in the given expression?
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Simplify the following expression:
(165 × 12) ÷ 45 + 110 = ? × 2
√3970 × √730- √2400 =?
Find the simplified value of the given expression.
(1/4) of {64Â - 28 x 15 + 13 x 16 - 12.5 of 122}
140% of 75 + 152 - 160 = ?
What will be the value of the following expression?
0.04 ÷0.002 × 0.05 × 50
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