2015 · Q22
Two persons A and B start simultaneously from two places c km apart, and walk in the same direction. If A travels at the rate of p km/hr and B travels at the rate of q km/hr, then A has travelled before he overtakes B a distance of
Elementary MathematicsTime, Speed and Distance
- Aqc/p+q km
- Bpc/p-q km
- Cqc/p-q km
- Dpc/p+q km
Explanation
A gains on B at (p − q) km/h, so overtaking takes c/(p−q) hours; in that time A covers p·c/(p−q) km (option B).