Two bike riders X and Y both start at 2 pm riding towards each other from 40 km apart.

Question

X rides at 30 km/h, Y at 20 km/h. If they meet after t hours, find when and where they meet.

Answer 1

let the distance travelled by X be x km
then the distance travelled by Y has to be 40-x km

time taken by X = x/30
time taken by Y = (40-x)/20

but when they meet, they both took the same time, so
x/30 = (40-x)/20

take over ...

Answer 2

Thanks!