Question

a man completed the trip of 136 km in 8 hours some part of the trip was covered at 15 kilometre per hour and the remaining at 18 kilometre per hour find the part of trip covered at 18 kilometre per hour

Answer 1

18x+15∗(8−x)=13618x+15∗(8−x)=136
x=163x=163

Total distance covered at 18km/hr = 18⋅16318⋅163 = 96km