Question

Question #5e34b

Answer 1

55

Explanation:

We can write `n` percent as `n/100`.

"`n` percent of 80 is 20" can be written as `n/100*80=20`.

Simplifying the fraction on the left:

`4/5*n=20`

multiply by 5:

`4n=100`

divide through by 4:

`n=25`.

So we're looking for 25%.

Now the question is "What is 25% of 220?"

`25/100*220=1/4*220=55`, so the answer is 55.