Problema Solution
From Sim's house to the lake is 30 kilometers. If he completed the round trip on his bike in 2 hours 30 minutes, what was his average speed in kilometers per hour?
Answer provided by our tutors
let
d = 30 km the distance From Sim's house to the lake
t = 2 hr 30 min = 2.5 hr the time of the round trip
v = the average speed
the average speed = the total distance/the time:
v = 2d/t
v = 2*30/2.5
v = 24 km/hr
the average speed is 24 kilometers per hour.