John attends a protest for 4 days. He then attends a second protest for 25% longer than the first. How many days did he spend protesting?
A step-by-step solution is:
9
The second protest was 4 *.

25 = 1 day longer than the first.

So the second protest was 4 + 1 = 5 days.

Thus he spent 4 + 5 = 9 days protesting.

.

Therefore, the answer is 9