Question
‘Amit’ is 1.5 times as efficient as ‘Bhuvan’, who
is 1/3 as efficient as ‘Chirag’. If Amit and Chirag together complete a work in 18 days, how long will Bhuvan and Dev take to do it if their efficiency ratio is 2:1 respectively?Solution
ATQ,
Let efficiency of Chirag = 3x units/day
Efficiency of Bhuvan = 3x / 3 = x units/day
Efficiency of Amit = 1.5x units/day
Efficiency of Dev = (x / 2) × 1 = 0.5x units/day
Total work = (Amit + Chirag) × 18 = (1.5x + 3x) × 18 = 81x units
Combined efficiency of Bhuvan and Dev = x + 0.5x = 1.5x units/day
Time = 81x / 1.5x = 54 days
More Difficult level Section Tests Questions
The value of 0.0486 ÷ 0.002 =
12.5% of 45 % of 480 + 957/29 = ? -14 × 15
18 + 28 ÷ 4 - 14 = ? - 35
...(15 × 225) ÷ (45 × 5) + 480 = ? + 25% of 1240
82.3 × 644.7 × 723.4 × 815.85 = 72?
(49 x ?) / 3.5 + 389 = 627
(117 + 93 - 10) ÷ 40 = ? - 12 X 2
(12% of 1250 + 85% of 400) x 10 = ?2
62.94% of 1800 - 15.03 % of 2400 = ?
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