The difference between a number increased by 17% and the same number decreased by 18% is 28. Find the number.

Correct option is C

Given:

Difference between 17% increase and 18% decrease of a number = 28

Solution:

Let the number be x

Increased value = x + 0.17x = 1.17x

Decreased value = x - 0.18x = 0.82x

Difference = 1.17x - 0.82x = 0.35x

Now, 

0.35x = 28

x = $$\frac{28}{0.35}$$​ = 80