Question

Meenu drives her car for 3/2 hours with constant speed of 66 km /hr and then for another 45 minutes with a constant speed of 80 km/hr what was her average speed​

Answer 1

Given:

Travel at 66 km/h for 3/2 hours

Travel at 80km/h for 45 mins

To Find:

Average speed

Solution:

Find the distance traveled at 66km/h

Distance = Speed x Time

Distance = 66 x 3/2 = 99 km

Find the distance traveled at 80km/h

Time = 45 mins = 3/4 hour

Distance = Speed x Time

Distance = 80 x 3/4 = 60 km

Find average speed:

Average speed = Distance ÷ Time

Average speed = (99 + 60) ÷ (3/2 + 3/4)

Average speed = 70.7 km/h (1 d.p.)

Answer: The average speed is 70.7 km/h

Answer 2

Question:

Meenu drives her car for 3/2 hours with constant speed of 66 km /hr and then for another 45 minutes with a constant speed of 80 km/hr what was her average speed?

Answer:

Answer is given by the upper person