faisalt wrote:

Rob and David live 200 miles apart. Deciding to have a picnic, they both start driving at 9:00am traveling in a straight line towards each other. Rob drives at a steady speed of 50 miles per hour, and David drives at a steady speed of 30 miles per hour. What is the time when they meet for their picnic?

A. 11:30am

B. 1:00pm

C. 1:30pm

D. 2:00pm

E. 3:40pm

I did an approximation to come up with the answer.

Rob will have driven half the distance in two hours (50 mph * 2hrs = 100 miles).

David will be at 60 miles iun the same time.

After 3 hours - Rob would be at 150 and David will be at 120 miles which means they would have crossed.

Hence, only possible answer is A.