A car starts from a place at 6 a.m. another car starts from the same place at 8 a.m. both the cars are moving in the same direction on a straight road . The speed of the second car is 20 km/h more than that of the first car.if the second car catches up with the first car at 2 p.m., find the speed of each car.
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Answer:
car A= 60km/hr car B=80 km/hr
Step-by-step explanation:
carA started at 6 am and meet second car at 2 pm
:. it travelled for 8hrs
carB started at 8 am and meet first car at 2 pm
:. it travelled for 6 hrs
let speed of car A = X km/hr
then speed of carB=X+20km/hr
they both travelled same distance
distance=speed×time
8×x=6(X+20)
8x=6x+120
8x-6x=120
2x=120
X=60
:.speed of car A = 60 km/ hr
speed of car B = x+20=80km/hr
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