Question

plz tell me the ans.​

Answer 1

Answer:

The average speed of the car $= 40 km/h$

Step-by-step explanation:

Abu boarded a bus at 7 in the morning.

Usually the bus travels 30 km/h on average, to reach the railway station at 11.

∴ at 30 km/h, the bus covers the distance in (11 - 7) = 4 hours.

∴ Distance to the railway station is 30 x 4 km = 120 km

Since it was raining, the bus could run only 20 km/h

Abu got down from the bus at 9, meaning after (9 - 7) = 2 hours of travel

at 20 km/h the bus travelled 20 x 2 = 40 km.

∴ Remaining Distance = (120 - 40) km = 80 km.

Abu caught a car and reached the station at 11 i.e. (11 - 9) hours = 2 hours

The average speed of the car $= \frac{Distance Covered}{Time Taken} = \frac{80}{2} km/h = 40 km/h$

Answer 2

Answer:

The average speed of the car = 40km/h

Step-by-step explanation:

Abu boarded a bus at 7 in the morning.

Usually the bus travels 30 km/h on average, to reach the railway station at 11.  

∴ at 30 km/h, the bus covers the distance in (11 - 7) = 4 hours.  

∴ Distance to the railway station is 30 x 4 km = 120 km  

Since it was raining, the bus could run only 20 km/h  

Abu got down from the bus at 9, meaning after (9 - 7) = 2 hours of travel  

at 20 km/h the bus travelled 20 x 2 = 40 km.  

∴ Remaining Distance = (120 - 40) km = 80 km.

Abu caught a car and reached the station at 11 i.e. (11 - 9) hours = 2 hours

The average speed of the car = Distance covered / Time taken.

80/2 = 40km/h.