Question

How to solve this math problem?

Answer 1

let total distance between towns x km
now lance speed =x/2 km/h
lance meet ali after 1 hr 15 minutes after starting from town X
now distance covered by ali in45 minutes is equal to distance covered by lance in1 hr 15 minutes -50
distance covered by lance in 1 hr 15 minutes after starting =1¼×x/2=5x/8 km
distance covered by ali in 45 minutes =80×45/60=80×3/4=60km
5x/8-50=60
(5x-400)/8=60
5x-400=480
x=880/5=176km =total distance between xand y town
lance speed=176/2=88km/hr