pls give me step by step answer
Attachments:
Answers
Answered by
1
Given,
d₁ = 15km, V₁ = 30km/h
d₂ = 75km, V₂ = 50km/h
d3 = 10km, V3 = 20km/h
we know that, average speed =
total distance covered/total time taken
total distance covered = D = 15 +75 + 10 =
100km
total time taken = T = (15/30) + (75/50) +
(10/20) = 2.5hours
so, average speed = 100/2.5 = 40km/h
hopes it's helpful
Similar questions