The ratio of the speed of a bus to that of a | vedclass

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(B) Speed of the car $= \frac{	ext{Distance}}{	ext{Time}} = \frac{720 	ext{ km}}{9 	ext{ h}} = 80 	ext{ km/h}$.Speed of the bus $= \frac{3}{4}

Vedclass · Accepted Answer

$756$

Vedclass · Answer

(B) Speed of the car $= \frac{	ext{Distance}}{	ext{Time}} = \frac{720 	ext{ km}}{9 	ext{ h}} = 80 	ext{ km/h}$.Speed of the bus $= \frac{3}{4} 	imes 80 	ext{ km/h} = 60 	ext{ km/h}$.Given the ratio of the speed of the bus to the train is $15:27$,we have $\frac{	ext{Speed of bus}}{	ext{Speed of train}} = \frac{15}{27}$.Speed of the train $= \frac{27}{15} 	imes 60 	ext{ km/h} = 27 	imes 4 = 108 	ext{ km/h}$.Distance covered by the train in $7 	ext{ hours} = 	ext{Speed} 	imes 	ext{Time} = 108 	ext{ km/h} 	imes 7 	ext{ h} = 756 	ext{ km}$.

The ratio of the speed of a bus to that of a train is $15: 27$. Also,a car covered a distance of $720 \text{ km}$ in $9 \text{ hours}$. The speed of the bus is $\frac{3}{4}$ the speed of the car. How much distance will the train cover in $7 \text{ hours}$? (in $\text{km}$)

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