Question
If the ratio of speeds of 'A' and 'B' is 5: 6 and 'B'
allows 'A' a start of 70 metres in a 1.2 km race, who will win the race and by what distance?Solution
Let the speeds of A and B is 50 m/s and 60 m/s respectively. B allows A start of 70 m in a 1.2 km race; That means A covers 1130 m and B covers 1200 m. Time in which A covers 1130 m = 1130/50 = 22.6 sec And, Time in which B covers 1200 m = 1200/60 = 20 sec It is evident that B wins the race and A takes 2.6 sec more than B to finish the race. ∴ Distance by which B wins the race = 2.6 × 50 = 130 m
What value should come in the place of (?) in the following number series?
1716, 2183, 2728, 3357, 4076, ?
What will come in place of the question mark (?) in the following series?
63, 92, ?, 158, 195, 224
24, 42, 60, ?, 96, 114
(248 + 352)/(34 - 30) = ?
What will come in place of the question mark (?) in the following series?
10, 135, ?, 226, 234, 235
178    168    148   ?     78    28
- What will come in place of the question mark (?) in the following series?
121, 115, 102, 82, 55, ? - What will come in place of (?) in the given number series.
729, 243, 81, 27, ?, 3 161Â Â Â Â 173Â Â Â Â Â Â 191 Â Â Â Â Â Â 215Â Â Â Â Â Â 245 Â Â Â Â Â Â ?
...41, 82, ?, 984, 4920, 29520Â Â Â
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