Question

abdul while driving to school computes the average speed for his trip to be 20kmh. on his return trip along the same routes,there is less traffic and the average speed us 40kmh. what is the average speed for adbul's trip.​

Answer 1

Answer:

80 / 3 km/h

Step-by-step explanation:

we use the formula 2v₁v₂/v₁+v₂

here

v₁=20 km/h

v₂= 40 km/h

=>2×20×40/20+40

=1600/60

=80 / 3 km/h

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