Question

The respective ratio between the speed of a bike, a van and lorry is 3 : 5 : 2. The speed of the van is 250 percent of the speed of the lorry which covers 360 km in 12 hours. What is the average speed of the bike and the van together?

Answer 1

let the ratio be X
so,3x,5x,2x
speed of van=250
speed of lorry=360
360-250=110
3+5+2=10
.:110/10=11
11*3=33,11*5=55,11*2=22
33+55+22/12=59.58