SOLUTION: a car travels a distance of 715 km at uniform speed.if the speed is increased by 10 km/hr the time taken is reduced by 2 hrs. what is the original speed.

Question 697119: a car travels a distance of 715 km at uniform speed.if the speed is increased by 10 km/hr the time taken is reduced by 2 hrs. what is the original speed.
Answer by god2012(113) (Show Source): You can put this solution on YOUR website!
Let 'x' be the initial speed of the car.
Let 't1' be the initial time taken to cover 715 kms
Therefore, t1 = 715 / x -------------eq.1
If the speed is increased by 10, let new time taken be t2.
t2 = 715/(x+10) = t1-2 = 715/x - 2
or
or km/hr

RELATED QUESTIONS
A car travels a distance of900 km with a certain average speed. After travelling half the (answered by Alan3354)

A car has to cover a distance of 600 km. Suddenly it got a break down so that the speed (answered by ankor@dixie-net.com)

a car travels from a to b in 45 mins with speed of 40 km/hr .if the speed is increased... (answered by josgarithmetic)

A car travels from P to Q at a constant speed. If its speed were increased by 10 km/h, it (answered by multiplier)

Time taken by a train to travel a distance of 225 km was reduced by 20 minutes when the (answered by mananth)

If a train travels at the speed of 45 km/hr, it is late by 48 minutes. If it travels 50... (answered by ankor@dixie-net.com)

If the speed of the car is increased by 10 km/hr, it takes 18 minutes less to cover a... (answered by Theo)

A car travels a distance of 9000 KM with a certain average speed. If after travelling... (answered by mananth)

The Speed of a car is 1.5 times the speed of bus.If the car travels at the speed of 60... (answered by josmiceli)