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Question

Delhi to Chandigarh journey of 192 km takes 2 hours less if Sumeet travels by his own car than If he travels by bus whose average speed is 16 km/hr less than that of his car. Determine speed of car.

A
48
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B
32
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C
16
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D
None
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Solution

The correct option is C 48
Let average speed = x
Av. speed of bus = x-16
Time taken by car = 192x
Time taken by bus =192x16
192x16=192x+2,192x=192x3072+2x232x
x216x1536=0
x248x+32x1536=0
(x+32)(x48)=0
x=48

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