# A test has 40 questions. Denise finished 2/5 of the questions in the first 10 minutes and 1/2 of the remaining questions in the next 15 minutes. How many questions had Denise answered after 25 minutes?

Jan 3, 2017

Denise had answered $28$ questions after $25$ minutes.

#### Explanation:

The first step is to see what $\frac{2}{5}$ of $40$ is

$\frac{2}{5} \cdot 40 = 16$.

Then, we can subtract this number from $40$

$40 - 16 = 24$

Now, we can see what half of $24$ is. This is $12$.

$12 + 16 = 28$