A car travels first 39 km distance in 45 minute while next 25 km distance in 35 minutes. What is its average speed?

45

km/h

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35

km/h

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48

km/h

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90

km/h

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Solution

The correct option is C $48$ km/h
Total distance covered by car $= 39 + 25 = 64 k m$
Total time taken to travel $= \frac{45}{60} + \frac{35}{60} = \frac{4}{3} h r$
Average speed $= \frac{T o t a l d i s t a n c e t r a v e l e d}{T o t a l t i m e t a k e n}$
$= \frac{64}{4 / 3}$
$= \frac{64 \times 3}{4}$
$= \frac{192}{4}$
$= 48 k m p h$

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A car travels first 39 km distance in 45 minute while next 25 km distance in 35 minutes. What is its average speed?

The correct option is C 48 km/hTotal distance covered by car =39+25=64 kmTotal time taken to travel =4560+3560=43 hrAverage speed =Total distance traveledTotal time taken =644/3 =64×34 =1924 =48 kmph