Question

a girl goes from her house to school in 2 hours and comes back in 3 hours. What is the average speed in (in km/h) if the distance between her home and school is 60km ?​

Answer 1

Answer:

Average speed = Total distance covered/ total time taken

=60+60/2+3

=120/5

=24 km/h

Explanation:

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Answer 2

Explanation:

speed 1 = 60/2 = 30 km/hr

speed 2 = 60/3 = 20 km/hr

average speed

= 2 × speed 1 × speed 2 / speed 1 + speed 2

= (2 × 30 × 20) / (20+30)

= 1200 / 50

= 24 km/hr