This puzzle looks like ordinary division, but the phrase divided by a quarter is where many people go wrong.
The expression is:
100 divided by a quarter, plus 10
A quarter is 0.25, so dividing by a quarter means:
100 ÷ 0.25 = 400
Then add 10:
400 + 10 = 410
So the correct answer is 410.
The common mistake is treating “divided by a quarter” as if it meant taking one-quarter of 100. Those are different operations. Dividing by a fraction smaller than 1 makes the number larger.
Answer: 410.
It is a quick puzzle, but the wording makes it surprisingly easy to misread.
