SOLUTION: a man drives his car for 150 km travelling at his normal average speed. if he increases his speed by 10 km/h, he will arrive half an hour sooner. what is his original average speed

Question 1158833: a man drives his car for 150 km travelling at his normal average speed. if he increases his speed by 10 km/h, he will arrive half an hour sooner. what is his original average speed?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!

              SPEED         TIME        DISTANCE

ORIGINAL         r          150/r         150

FASTER          r+10        150/(r+10)    150

DIFFERENCE

RELATED QUESTIONS
A man drives a car a distance of 200 km at an average speed of 44 km/h. What must be his... (answered by Edwin McCravy)

A man covers distance of 120 km from town A to Town B at an average speed x km/h. If he... (answered by josgarithmetic)

Joel drives his car for 20km at a certain speed.At a distance,he increases his speed by 5 (answered by ankor@dixie-net.com)

Joel drives his car for 20 km at a certain speed. At a distance,he increases his speed by (answered by ankor@dixie-net.com)

Help would be appreciated for the following question: A coach driver has to travel 560... (answered by ankor@dixie-net.com)

Mr kumar lives in the eastern part of singapore. He visits his aged parents, who lives 36 (answered by stanbon)

harry drives his car for 15 miles at a certain speed. he then increases his speed by 10... (answered by josgarithmetic)

a man drives a car a distance of 200 km at an average speed of 44 kmhr^-1. What must be... (answered by rothauserc)

Tom drives a truck. His regular trip is a distance of 280 km. He drives at an average... (answered by Alan3354)