If two planes leave the same airport at 1:00 PM, how many miles apart will they be a 00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph?

A 50 miles

B 100 miles

C 500 miles

D 700 miles

Correct Answer: Option C

since one plane travel north, the other west, they are at right angles

North = 150X2 =300

West = 200X2=400

By Pythagoras' Theorem, 300 square + 400 square = x square( where x is the distance) x = 500m