Question
The average weight of a group of
20 boys is 52 kg. If the total weight of a group of 14 girls is 30% less than the total weight of the group of boys, what is the ratio between the average weight of a boy and that of a girl, respectively?Solution
ATQ,
Total weight of all boys = 20 × 52 = 1040 kg Total weight of all girls = 1040 × 0.70 = 728 kg Average weight of a girl = 728 ÷ 14 = 52 kg Required ratio = 52:52 = 1:1
14.2% of 7200 + 2.8% of 6400 =?
14.232 + 19.98% of 629.99 = ? × 6.99
(?)2 + 4.113 = 25.92 – 32.03
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.)...
11.992 + (6.01 × 5.98) + ? = 350.03
( 18.02% of 699.95 ) × 16.98 = ? 2 + 22.99 × 5000 ÷ 1250
? = 65.78² ÷ (5.01⁵ + 7.02 × 33.33) + 33.33% of (290.88 × 23.09)
What approximate value will replace the question mark (?) in the following?
? + 1...
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.)...
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