Question
On Friday, if ratio of the speed of boat to the speed of
stream is 2:1, then what is the difference between the time taken by the boat while going upstream and downstream? Study the following table carefully and answer the given questions: Distance Upstream = Distance Downstream Total time taken = Downstream time + Upstream timeSolution
Let the speed of the boat and speed of the stream be 2x and x km/hr respectively. According to question, => [360/(2x+x)] + [360/(2x-x)] = 60 => (360/3x) + (360/x) = 60 => x = 8 The speed of stream is 8 km/hr and the speed of boat is 16 km/hr. Required difference = (360/8) - (360/24) = 30 hours
23 45 89 155 ? 353
3, 10, 29, 66, ?
98, 122, 182, 278, 410, ?
In each of the following number series, one term is missing. Find the missing term.
3, 8, 15, 24, 35, ?
What should come in place of (?) question mark in the following number series.
4, 9, 19, 34, 54, ?
98, 89, 114, 50, 194, ?
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
16, 15, 24, -1, 48, ?
What will come in place of the question mark (?) in the following series?
112, 123, 144, 169, 190, ?
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