16Hit1600
AlgebraEasy–MediumOriginal value before a percent decrease

Algebra practice question

When a number is decreased by 12%, the result is 66. What is the original number?

Answer: 75

0.88n = 66 → n = 66 ÷ 0.88 = 75.

Common wrong answers

If you answered 78
78 adds 12 to 66.
If you answered 73.92
73.92 adds 12% of 66 instead of dividing by 0.88.
If you answered 58.08
58.08 takes 12% off 66 again.

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