johny went to his uncle's house, riding his bicycle at 15 km/ hr and came at 10 km/hr what his average speed for the whole journey
Answers
Answered by
9
Write a diary entry on the new session of class nine has started . In your class a new girl has come
Answered by
15
let x = 15 km / hr ,y = 10km / hr
average speed = 2xy/ ( x + y )
= (2 × 15 × 10 ) / ( 15 + 10 )
= 300 ÷ 25 = 12 km / hr
Answer:
--------------
his average speed = 12 km / hr
average speed = 2xy/ ( x + y )
= (2 × 15 × 10 ) / ( 15 + 10 )
= 300 ÷ 25 = 12 km / hr
Answer:
--------------
his average speed = 12 km / hr
Similar questions