Subject: mathqa
Question: a truck covers a distance of 288 km at a certain speed in 8 hours . how much time would a car take at an average speed which is 18 kmph more than that of the speed of the truck to cover a distance which is 90 km more than that travelled by the truck ?
Option: 
A: none
B: 7 hours
C: 5 hours
D: 6 hours
Answer: B