A number when increased by 36.36% becomes 180. Find the number?
Explanation:
Let the initial number be N. Final number (F) = 180.
Percentage change= 36.36% = 4/11 ∴ multiplication factor (mf) = 1 + 4/11 = 15/11
⇒ N = F/mf = 180/15/11 = 180 × 11/15 = 132.
Hence, 132.
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