Question 58

If 90 is increased by x%, then it becomes 117. What is the value of x?

Solution

If 90 is increased by x%, then it becomes 117.

90 of (100+x)% = 117

$$90\times\frac{(100+x)}{100}=117$$

$$\frac{(100+x)}{10}=13$$

(100+x) = 130
x = 130-100
x = 30

Value of x = 30


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