Question
A man travels some distance at a speed of 28 km/hr and
returns at a speed of 21 km/hr. If the total time taken by him is 4 hrs 30 min, the distance isSolution
Let the distance travelled by a man be D km According to the question, Total time taken = 4 hrs 30 min = 4(30/60) = 9/2 hours Total time = T1 + T2 D/28 + D/21 = 9/2 (3D + 4D)/84 = 9/2 7D/84 = 9/2 D = 54 km
366 276 196 126 66 ?
7 98 644 3145 12596 37797
...25, 200, 40, ?, 64, 512
D irection: Which of the following will replace ‘?’ in the following series
9, ‘?’, 1242, 1581, 1783
...80, 255, 624, ?, 2400, 4095
A series is 11, 20, 42, 82, 166, 330
If another series 4, a, b, c, d, 106 follows the same pattern as the given number series, then find the appr...
If 43 34 x 36 39 38
Then, (x/2) + 0.5 + x = ?
...6 16 116 566 2272 6814
11 a�...
4 ? 113 449 1343 2681
...3 15 35 63 99 ?
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