Question
A was travelling from point X to point Y. He increased
his speed by 10 km/h after every hour. He reached his destination in 14 hours. If his initial speed was 30 km/h, then what was his average speed in the whole journey?Solution
Total distance travelled by A = (14/2) × {2 × 30 + (14 – 1) × 10} = 7 × (60 + 130) = 1330 km Required average speed = 1330/14 = 95 km/h
More ESIC Part B Questions
- Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___
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