Question
An inlet pipe can fill a tank in 15 minutes when
there’s no leakage. However, due to a leak in the tank, it takes 21 minutes to fill it completely. How long would the leak alone take to empty the full tank?Solution
Let the capacity of the tank = L.C.M and 15 and 21 = 105 units
Then, efficiency of the inlet pipe = 105 ÷ 15 = 7 units/minute
Combined efficiency of the inlet pipe with the leak = 105 ÷ 21 = 5 units/minute
So, efficiency of the leak = 5 - 7 = 2 units/minute (outlet)
So, time taken by the leak to empty the entire tank = 105 ÷ 2 = 52.5 minutes
?% of (112.31 ÷ 13.97 × 90.011) = 359.98
40.22 of 249.98% + 459.99 ÷ 23.18 = ?
456.9 + 328.10 - 122.98 = ? + 232.11
108.31% of (4.9/9.012) of ? = 23.9% of 2499.9
A man lost one-fourth of his initial amount in the gambling after playing three rounds. The rule of Gambling is that if he wins he will receive Rs. 1000...
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.)...
(32.18% of 2399.89 - √624 × 26.25) % of 149.79 = ?
1299.99 ÷ 20.21 = ? + 325.985 - (180 ÷ 6 × 24.03)
256.12 ÷ 7.92 + 26.11 × 7.82 – 44.09 = ?2
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