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Work done by pipe A in 1 minute = 1/12 Work done by pipe B in 1 minute = 1/15 Work done by pipe C in 1 minute = -1/10 Net work done in 1 minute = (1/12 + 1/15 - 1/10) = 3/60 Time taken to fill the tank = 1 ÷ 1/20 = 20 minutes Correct answer: c) 20 minutes
Find the approximate value of Question mark(?). No need to find the exact value.
59.88% of 419.78 + (24.09 × 5) ÷ 3 – √(80.81) = ?
...(33.95)2 – (25.004)2 + (18.0099)2 – (9.07)2 = ? - (14.990)2
(√780 + 111.98) ÷ 6.95 + 39.95% of 179.98 = ?
What approximate value will come in place of question (?) in the following given expression? You are not expected to calculate the exact value.
...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.)...
23.98% of 624.99 = 19.98% of ? + 14.98% of 639.99
29.98% of 549.99 = ? - 254.97 + 79.98% of 74.99
(15.99)2 + 219.98% of 20.01 = ?2 × 75.01%
(32.25 × 14.98) + 31.76% of 1499.89 = ? × 3.67
