Question

A man completed a trip of 136 km in 8 hr . Some parts of the trip was covered at 15km/hr and the remaining at 18km/hr. Find the numbers .

Answer 1

 Let the man travel for t hours with the speed 18 kmph. He travels with 15 kmph for 8-t hours .

 

So 136 km = t * 18 + (8 - t) * 15

So t = 16/3 hrs. 

 

Distance traveled with 18 kmph = 18*16/3 = 96 km

Distance traveled with 15 kmph = 136-96 = 40km

 

Hope This Helps :)