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The average speed of a Car is $\frac{9}{5}$ times the average speed of a bus. A tractor covers 575 km in 23 hr. How much distance will the car cover in 4 hours. If the speed of the bus is twice the speed of the tractor?

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340 km

360 km

450 km

370 km

answer is B.

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Detailed Solution

Tractor covered =575 km
Time taken =23hr.
speed of the tractor =

\frac{575}{23}

=25 kmph
Speed of Bus = 2x 25= 50 kmph
Speed of the car =

\frac{9}{5}

of 50
=

\frac{9}{5}

\times

50
=90 kmph
Distance covered by Car in 4 hour =90

\times

4
= 360 km .
Exam Type: CBSE
Class:Grade 9

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