Question

The difference between increasing a no by 5 percent AND decreasing it by 5 percent is 20 what is the number

Answer 1

(x + 5%of x ) - (x - 5%of x ) = 20

=> (x + x/20) - (x - x/20) = 20

=> 21x/20 - 19x/20 = 20

=> 2x/20 = 20

=> x = 20 × 10 = 200