Question

Distance between two places A and B is 120 km. Two cars start simultaneously from A and B in opposite direction and distance between them after 3 hours is 54 km. If speed of one car is less than that of other by 8 km/hr. Find the speed of each.

Answer 1

Answer:

Let speed of 1st car be x km/hr

speed of 2nd car=(x-8)km/hr

t=3  hr

distance travelled by car1 in 3 hrs=3*x km

distance travelled by car2 in 3 hrs=3*(x-8) km

distance between two cars after 3 hrs= 54 km

120-[3x+3x-24]=54

120-54=6x-24

66+24=6x

6x=90

x=90/6

x=15

speed of 1st car =15 km/hr

speed of 2nd car =(15-8)km/hr =7 km/hr

Step-by-step explanation:

Answer 2

Step-by-step explanation:

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