Question
The average weight of 36 students in a class is 62 kg.
When two new students having weights (m + 8) kg and (m − 6) kg joined, the average weight dropped by 1 kg. What is the value of (m − 30)?Solution
ATQ,
38 × 61 − 36 × 62 = m + 8 + m − 6 Or, 2m + 2 = 2318 − 2232 Or, 2m = 84 Or, 'm' = 42 Therefore, required value = 42 − 30 = 12
More Average Questions
- 44.83% of 799.88 + (84.12 X 14.98 ÷ 62.87) = ?² + 55.65
15.232 + 19.98% of 649.99 = ? × 4.99
20.22% of (61.9 × 5.01) + 69.97 =?
14.232 + 19.98% of 629.99 = ? × 6.99
{(23.65 × 35.12) ÷ 6.97} + 179.86 = ? × 14.76
(1120.45 ÷ 15.89) × 11.34 = ? × 4.78
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
999.99 + 99.99 + 99= ?
(33.95)2 – (25.004)2 + (18.0099)2 – (9.07)2 = ? - (14.990)2
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