Question
The average mark obtained by 110 candidates in a certain
examination is 45. If the average marks of passed candidates are 50 and that of the failed candidates is 25, then what is the number of candidates who passed in the examination?Solution
According to question, => 50 × x + 25 × (110 − x) = 110 × 45 => 50x + 2750 – 25x = 4950 => x = 88
More Average Questions
69, 35.5, 39.5, 68.25, 152.5, ?
3   2    10   ?   17   16
Find the missing number in the given number series.
4, ?, 110, 665, 4660, 37285
195% of 1420 + 72 × 25 =?
55   56    52   61    ?      70    34
...[(145)² ÷ 25 × 52] ÷ ? = 29 × 13
53 × 38 + 32 × âˆ›54872 = ?
What will come in place of the question mark (?) in the following series?
24, 25, 34, 59, 108, 189, ?
(102 × 24)/8 = ?
What will come in place of (?) question mark in the given number series.
10, 17, 26, 37, 50, ?
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