Question

Nick went bike ride to the store 5 miles away.If it took nick 1/2 of an hour to get there and 2/5 to get back,what was his average rate of speed

Answer 1

11.1

Explanation:

Answer 2

11.1m/s

Explanation:

Given parameters:

Distance of store = 5miles

Time to store =
`(1)/(2)`hr

Time from store =
`(2)/(5)`hr

Unknown:

Average speed = ?

Solution:

Average speed is the total distance divided by the total time taken.

Average speed =
`(total distance)/(total time taken)`

Total distance = distance to store + distance from store = 5 + 5 = 10miles

Total time taken =
`(1)/(2)`hr +
`(2)/(5)`hr =
`(9)/(10)`hr

Average speed =
`(10)/((9)/(10) )` = 10 x
`(10)/(9)` = 11.1m/s