Math, asked by utkarshtripathi52, 6 months ago

A journey by car takes 48 minutes at 65 kilometre per hour. How fast must the car go to finish the journey in 40 minutes​

Answers

Answered by Anonymous
3

Time tajen by car to complete journey = 48 min

speed of car = 65 km/h

we know

speed=

 \frac{Distance}{time}  \\ </p><p></p><p>65= \frac{D}{ \frac{48}{60} }  \\ </p><p></p><p>D=65× \frac{48}{60} =52km \\ </p><p></p><p>∴ speed  \: of \:  car  \: to \:  cover  \: this \:  distance  \: in  \: 40  \: min \\ </p><p></p><p>speed= \frac{52}{ \frac{40}{60} } = \frac{52}{40} ×63=26×3 \\ </p><p></p><p>speed = 78 km/h</p><p></p><p>

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