Question

Abdul, while driving to school, computes the average speed for
his trip to be 20 km hl. On his return trip along the same
route, there is less traffic and the average speed is
30 km h! What is the average speed for Abdul's trip?​

Answer 1

Answer:

24km/h is the answer

Explanation:

Let us assume that Abdul is travelling x kilometer distance while going to school.

Distance = Speed x Time

1)When it's average speed is 20 km/hr

x=v

1

×t

1

=20×t

1

2)When it's average speed is 30 km/hr

x=v 2×t 2

=30×t

V average= totaltimetakentotaldistancetravelled

V

average

=

v

1

x

+

v

2

x

x+x

=

20

x

+

30

x

2x

=24 km h

−1