Two places a and b are 80 km apart from each other on a highway. a car stats from a and another from b at the same time. if they move in the same direction, they meet in 8 hours and if they move in opposite directions the meet in 1hour and 20 minutes. find the speed of the cars.\
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Answer:
Speed of Car A and B are 35 km / hr and 25 km / hr respectively.
Step-by-step explanation:
Let the speed of car at A is x km / hr and at B is y km / hr
Case 1.
8 x - 8 y = 80
x - y = 10
x = 10 + y ... ( i )
Case 2.
4 / 3 x + 4 / 3 y = 80
x + y = 60
x = 60 - y ... ( ii )
From ( i ) and ( ii )
10 + y = 60 - y
y = 25
Putting value of y in ( i )
x = 10 + 25
x = 35 .
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