Explanation:
12 shots in 5 minutes.
12/5 ratio.
how long for 5 shots ? x minutes
5/x must be the same ratio as 12/5
so,
5/x = 12/5
25/x = 12
25 = 12x
x = 25/12 = 2 1/12 ≈ 2.08 minutes =
= 2 minutes and 5 seconds
(60 seconds per minute divided by 12 = 5)