Tariq drives from city A to B at 40 km per hour and returns over the same road at 30 km per hour and spends 8 hours away from fome including a one-hour stop for lunch.What is the distance(in km) between city A and city B?
Solution
Correct Answer: Option B
suppose, distance from A to B = x k.m according to question, x/40+x/30+1=8 or,3x+4x/120=8-1 or,7x=7 X120 or,x=120 so ,distance=120 km
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