A person travels a certain distance at 3 km/h and reaches 15min late. If he travels at 4 km/h he reaches 15 min earlier. The distance he has to travel is?
A certain distance at different speeds
The distance travelled by that person,D=speed1×speed2/difference of speeds×time(if one is late and in next speed it is earlier then add the time otherwise subtract it)
Thnk u ....