# On a test, Matilda answered 12 out of the first 15 problems correctly. If this rate continues, how many of the next 25 problems will she answer correctly?

Nov 14, 2016

Matilda gets $20$ of the problems right.

#### Explanation:

Matilda answered $12$ of the $15$ problems or a ratio of $\frac{12}{15}$. This gives

12/15 = 0.8 * 100% = 80%

If she gets 80% of the next set of $25$ questions right

$25 \cdot 0.8 = 20$

She will get $20$ problems correct.