SOLUTION: two planes travel from opposite direction. plane A travel 70kph from one direction and plane B travel from opposite direction at the rate of 90kph. If the distance is 640km. in how
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: two planes travel from opposite direction. plane A travel 70kph from one direction and plane B travel from opposite direction at the rate of 90kph. If the distance is 640km. in how
Log On
Question 613985: two planes travel from opposite direction. plane A travel 70kph from one direction and plane B travel from opposite direction at the rate of 90kph. If the distance is 640km. in how many hours the two planes intersect?
kindly show us the solution. thanks. Answer by orangetiger8884(3) (Show Source):
You can put this solution on YOUR website! 1 hour = 70 + 90 = 160 km
2 hour = 160 + 70 + 90 = 320 km
3 hour = 320 + 70 + 90 = 480 km
4 hour = 480 + 70 + 90 = 640 km
the answer is 4 hours
(