Question

A whale has a tracking device attached to it. The whale traveled 184 miles in 6 hours. About how fast did the whale swim per hour?

Answer 1

184 miles in 6 hours
how many miles per hour
m/h
184/6 = x/1
cross multiply 
(184 * 1) / ( 6 * x)
184 = 6x
divide both sides by 6
92/3 = x

That is 30  2/3 miles per hour or approximately 30.7 miles per hour.

Hope this helps