We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.More informationAgree
asked 2016-09-10 06:28:55 
Two cars start from the same point at the same time. The first car travels at a constant speed of $12$ km/hr while second car travels at an initial speed of $6$ km/hr, which increases by $1$ km/hr every hour. What will be the distance travelled by the second car by the time it meets the first car
like 0 dislike 0 comment
answered 2016-09-21 07:57:01 
Ans: $156$ km

In first $6$ hours, first car travels $6+5+4+3+2+1$ km more than the second car.

In $7\text{th}$ hour, both cars travel same distance.

In next $6$ hours, second car travels $1+2+3+4+5+6$ km more than first car and both cars meet.

Therefore, total travelling time is $13$ hours. In this time, each car travels $13×12=156$ km.
like 0 dislike 0 comment

Answer This Question