PLACE (A) AND (B) ARE 20 KM APART FROM EACH OTHER ON HIGHWAY. A CAR START FROM (A) AND OTHER FROM (B) AT THE SAME TIME . IF THEY MOVE IN THE SAME DIRECTION , THEY MEET IN 8 HOURS AND IF THEY MOVE IN OPPOSITE DIRECTION THEY MEET IN 1 HOUR AND 20 MIN . FIND THE SPEED OF CAR ?
Answers
Answered by
1
Step-by-step explanation:
160 is a answer ......not sure.....
Answered by
1
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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