Question 1031693


running speed = 10km/h
running distance = x km
running time = x/10

walking speed = 5 km/h
walking distance = 65-x
walking time = 65-x/5

walking time + running time = 9

(65-x)/5 + x/10 =9

multiply equation ny 110
2(65-x)+x =90

130-2x+x=90

x=40km  running distance