Practice GAT Quantitative Reasoning questions with answers and explanations.
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Upstream speed equals still-water speed minus stream speed.
Thus, 10 - 2 = 8 km/h.
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Speed equals distance divided by time.
Thus, 180 ÷ 3 = 60 km/h.
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Distance equals speed multiplied by time.
Thus, 72 × 2.5 = 180 km.
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To convert km/h to m/s, multiply by 5/18.
Thus, 54 × 5/18 = 15 m/s.
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To convert m/s to km/h, multiply by 18/5.
Thus, 20 × 18/5 = 72 km/h.
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Time equals distance divided by speed.
Thus, 12 ÷ 4 = 3 hours.
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Three taps together have three times the rate of one tap.
One tap therefore takes 3 × 6 = 18 hours.
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The remaining part is 3/4 of the tank.
At 8 hours per full tank, 3/4 takes 6 hours.
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Daily work equals total work divided by the number of days.
Thus, A's one-day work is 1/12.
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Daily wage equals total earnings divided by days worked.
Thus, 3,600 ÷ 12 = Rs. 300.
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Their combined daily rate is 1/10 + 1/15 = 1/6.
Therefore, they complete the job in 6 days.
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A's share is 3 out of 8 total parts.
Thus, A receives 3/8 × 4,800 = Rs. 1,800.
