The difference between the value of the number increased

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The difference between the value of the number increased by 20% and the value of the number decreased by 25% is 36. Find the number.

1. 7.2
2. 0.8
3. 720
4. 80

Correct Option: D

Let the number be x.
∴ (20 + 25)% of x = 36

⇒	45x	= 36
	100

⇒ x =	36 × 100	= 80
	45