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?

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Denise had answered ##28## questions behind ##25## minutes.

The pristine stalk is to see what ##2/5## of ##40## is

##2/5 * 40=16##.

Then, we can take this sum from ##40##

##40-16 = 24##

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

Finally, we add

##12+16= 28##

Hope this helps!

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