Question

Distance between two place A and B is 210 km. Two cars start simultaneously from A and B in opposite direction and distance between them after 3 hour is 54 km . if the speed of one car is less them of other by 8 km /hr . find the speed ​

Answer 1

Answer:

Step-by-step explanation:

A.......................carA...............54km.....................carB.........................B

                       after 3 hours this is the situation

let speed of carA= xkm/h

     speed of carB = x-8 km/h

let carA travelled y km

carB travelled = 210-(54+y) = 156-y km

distance= speed×time

for carA

y = 3x

for carB

156-y = (x-8)×3

156-3x = 3x-24

6x=180

x=30

so speed of the cars are 30km/h and 22km/hr