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Mathematical Puzzles Hard 2 min

A number is increased by 20% and becomes 180. What was the original number?

Hint
180 represents 120% of the original.

Answer

150.

Explanation

If 120% of the original number is 180, the original is 180 ÷ 1.2 = 150.

Step-by-Step Solution

1.20x = 180.
x = 180 ÷ 1.20.
x = 150.
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