Question

the difference between increasing a number by 5% and decreasing it by 5% it 20 what is the number​

Answer 1

let the number be x

increasing it by 5% means (x+5/100x)

decreasing it by 5% means (x-5/100x)

difference = x+5/100x-(x-5/100x)

20=1.05x-(0.95x)

20=x(1.05-0.95)

20=0.1x

x=20/0.1

x=200