Question

when increased by 80%become900


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Answer 1

Let the number be x.

ATQ,
x + x*80/100 = 900
x + 80x / 100 = 900
(100x + 80x) / 100 = 900
180x = 90000
x = 500

Thus, 500 increased by 80% becomes 900 :)

Answer 2

Answer:

let the unknown number be. X

$x + \frac{80}{100} = 900$

$= x = 900 - \frac{80}{100}$

$= \frac{90000}{100} - \frac{80}{100} = \frac{89,920}{100}$

X=899.2

899.3 will be increased by 80% to become 900