Answer:
20%
Explanation:
Given that:
Last year : number of free throws per game = 10
This year ; number of free throws per game = 12
Percentage increase in the Number of free throws he makes this year:
[(this year - last year) / last year] × 100%
[(12 - 10) / 10] * 100%
(2 / 10) * 100%
0.2 * 100%
20%
Hence, there was a 20% increase in the Number of free throws made this year.