Question
A child is half as efficient as a man. How much time do
8 children need to build a wall that is 60% the size of the wall built by the 12 men in 15 days?Solution
Let the efficiency of each man be '2x' units/daySo, total work = 2x X 12 X 15 = '360x' unitsAnd efficiency of a child = 2x ÷ 2 = 'x' units/daySo, required time = (360x X 0.6) ÷ (8 X x) = 27 days
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
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.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
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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