Question

Two joggers left Delhi for Noida simultaneously. The first jogger stopped 42 min later when he was 1 km short of Noida and the other one stopped 52 min later when he was 2 km short of Noida. If the first jogger jogged as many kilometers as the second, and the second as kilometers as first, the first one would need 17 min less than the second. Find the distance between Delhi and Noida?

A.5 km

B.15 km

C.25 km

D.35 km

Answer 1

Hey buddy,

● Answer-
(b) 15 km.

● Explanation-
Let x and y be speeds of two joggers (km/min) and d be the distance.

According to given data,
42x + 1 = d ...(1)
52y + 2 = d ...(2)
d/y - d/x = 17 ...(3)

Solving (1), (2) & (3),
x = 1/3 km/min
y = 1/4 km/min
d = 15 km

Distance between delhi and noida is 15 km.

Hope that is useful...

Answer 2

Step-by-step explanation:

If any doubt please free feel to comment.