the distance between two cities a and b is 70 kilometre two cars start moving from a to b respectively if they move in the same Direction they will meet in 7 hour and if they move towards Each Other they meet in one hour find the speed of both the cars
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Answer:
The speed of Car A is 40km/hr.
The speed of Car B is 30 km/hr.
Step-by-step explanation:
Distance between A & B is 70km.
←A & ← B both travel in same direction.
when they are moving in same direction ,the speed is x-y.
if they travel towards each other →← they meet in 1 hour.
they are moving towards each other,the speed is x+y.
Distance = 70km
7(S1-S2)=70
S1-S2=10---›(i)
similarly
1(S1+S2)=70
S1+S2=70---›(ii)
Solving (i) & (ii)
2(S1)=80.
S1=80/2=40 Km/ hr.
substitute S1 in S1+S2=70
so,40+S2=70;S2=30 km/hr.
The speed of Car A is 40km/hr.
The speed of Car B is 30 km/hr.
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