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Two men A and B walk from X to Y a distance of 42 kms at 5 km and 7 km an hour respectively. B reaches Y and returns immediately and meets A at R. Find the distance from X to R.
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- 32 km
- 30 km
- 35 km
- 40 km
Correct Option: C
When B meets A at R, by then B has walked a distance (XY + YR) and A, the distance XR.
That is both of them have together walked twice the distance from X to Y, i.e., 42 kms.
Now, the ratio of speed of A and B is 5 : 7 and they walk 84 kms.
∴ Hence, the distance XR travelled by
| A = | × 84 = 35 kms. | |
| 5 + 7 |
