Question

A save percentage in lacrosse is found by dividing the number of saves by the number of shots faced. A

lacrosse goalie saved 7 of 11 shots. How many additional consecutive saves s must the goalie make to
raise his save percentage to 0.850?

Answer 1

The goalie needs to make 16 more saves in a row.

Explanation:

Let n be the number of additional saves needed.

`(7+n)/(11+n)\geq 0.85`

`7+n\geq 0.85(11+n)\\`

`7+n\geq 9.35+0.85n`

`0.15n\geq 2.35`

`n\geq 15.66`