CAT 1994 — QA Question 36
Time, Speed & DistanceEasy
The winning relay team in a high school sports competition clocked 48 minutes for a distance of 13.2 km. Its runners A, B, C and D maintained speeds of 15 kmph, 16 kmph, 17 kmph, and 18 kmph respectively. What is the ratio of the time taken by B to than taken by D?
Answer & solution
Correct answer: 9 : 8
- A
5 : 16
- B
5 : 17
9 : 8
- D
8 : 9
Solution
Since it is a relay race, all the runners ran the same distance.
Hence, for a same distance,
ratio of times =
Hence, ratio of times taken by B & D = 18 : 16 = 9 : 8.