Question

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A student answers 80% of the questions on a math exam correctly. If she answers 20 questions correctly, how many questions are on the exam?

Answer 1

80/100x20 = 16 that is the answer

Answer 2

To simplify that question, you would normally say "20 is 80 percent of what number"
To find the answer you must grab the number 20 and divide it by 80% or 0.8
20 ÷ 80% = 25
20 ÷ 0.8 = 25
There are 25 questions on the exam