Question

At an average speed of 60 km per hour a bus covers a certain distance 3 hours 20 minutes. How long will it take to cover the same distance at a speed of 40 km per hour.

solve by direct and inverse variation method.​

Answer 1

Answer:

we can write 3hr.20min.=10/3 hr.

Distance = 60×10/3=200 km.

time at speed of 40 km/h = 200/40=5hr.

Answer 2

Step-by-step explanation:

SOLUTION

SPEED=DISTANCE/TIME

GIVEN,SPEED=60 KM PER HOUR

GIVEN TIME=3HOUR 20MINUTE=10/3HRS

DISTANCE=SPEED×TIME=60×10/3=200KM.

NOW. SPEED =40KM PER HOUR

TIME=DISTANCE/SPEED=200/40=5 KM.

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