Question

How many hours are needed to travel a distance of 100 km, if a bus travels a distance of 20 km in 2 hours?​

Answer 1

Answer:

Let the distance travelled at 100 km/hr be x km.

Then, distance travelled at 50 km/hr is (170 - x) km.

Given,

100

x

+

50

(170−x)

=2

⇒

100

x+2(170−x)

=2⇒x+240−2x=200

⇒x=140km.

∴ Distance travelled at 50 km/hr =(170−140)km=30km

Answer 2

$\huge\sf\pink{Answer}$

$time \: = \frac{distance}{speed}$

Time = 20km/2

Time = 10h

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Hopefully it helps

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