Question
A motorist is traveling at 72 km/h and expects to
complete his journey in 1.25 hours. After reaching halfway, he halts for 15 minutes. What should be his speed for the remaining part?Solution
Total distance = 72 × 1.25 = 90 km
Time for half = (45 ÷ 72) × 60 = 37.5 minutes
Time left = 75 – 37.5 – 15 = 22.5 minutes
Required speed = (45 ÷ 22.5) × 60 = 120 km/h
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4, 4, 8, 32, 256, ?
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What will come in place of the question mark (?) in the following series?
4, 36, 31, 279, 275, 2475, ?
What will come in place of the question mark (?) in the following series?
24, 36, 16, 46, 4, ?, -12Â
21, 37, 73, 137, ?, 381
What will come in place of the question mark (?) in the following series?
75, 219, 388, ?, 809, 1065What will come in place of (?) Question mark in the given number series.
500, 489, 467, 434, 390, 335, ?
3 4 10 33 136 ?
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