The distance between two towns, "A" and "B" is 350"km". The trip takes 3 hours, travelling x hours at 120 "km"/"h" and the remaining time at 60"km"/"h". Find the value of x. ?

1 Answer
Jun 19, 2018

The value of x is 2 5/6 hours.

Explanation:

The trip was

x hours at 120 km/h and (3-x) hrs at 60 km/h

:.350= 120*x+ 60*(3-x) or

350= 120x- 60x +180 or 60 x =350-180 or

60 x =350-180 or 60 x = 170 or

x= 170/60=17/6 = 2 5/6 hours

=2 hours and 5/6*60=50 minutes

x = 2 5/6 hours [Ans]