A car travels a distance of 715 km at a uniform speed. if the speed of car is 10 km/hours more, it takes 2 hours less to cover the same distance. find the original speed of the car
Answers
Answered by
36
Let the original speed be x km / hr. Then
speed of car = 10 Km/hr
distance = 715 km
[715/x] - [715/(x+10)] = 2
when we solve this equation we get
x^2 +10x - 3575 = 0
x^2 +65x - 55x -3575 = 0
x(x+65) -55(x+65) = 0
(x-55) (x+65) = 0
so we get x = 55 km/hr is the original speed
i hope it will help you
regards
speed of car = 10 Km/hr
distance = 715 km
[715/x] - [715/(x+10)] = 2
when we solve this equation we get
x^2 +10x - 3575 = 0
x^2 +65x - 55x -3575 = 0
x(x+65) -55(x+65) = 0
(x-55) (x+65) = 0
so we get x = 55 km/hr is the original speed
i hope it will help you
regards
Answered by
4
Answer:
dishnaysyzzgdsyzyzhzhzgzhsshsheyyshagejshnyeshejshejshshshshshdh6 was his first choice in songs with a series of the pen and
Similar questions