Question: A car covers a distance of 528 km in a certain time at a speed of 66 km/h. How much distance would a truck cover at an average speed which is 24 km/h less than that of the speed of the car in time which is 7 h more than that taken by the car? [IBPS RRB (Office Assistant) 2012]
Options:
A) 336 km
B) 682 km
C) 598 km
D) 630 km
E) None of these
Show Answer
Answer:
Correct Answer: D
Solution:
- Case I Time taken by car $ =\frac{528}{66}=8h $
Case II Time $ =15h $
Speed $ =66-24=42km/h $
$ \therefore $ Distance covered by truck $ =Speed\times Time $
$ =42\times 15=630km $