Question

A number decreased by 20% gives us 20. Find the number

Answer 1

Answer:

101

Step-by-step explanation:

Let the number be x.

x - 20% = 20

x - 20/100 = 20

x - 1/5 = 20 { After simplifying}

x - 1 = 20*5 { Cross multiplication}

                  { 20 multiplied by 5}

x - 1 = 100

x = 100 + 1 { Transposition}

x = 101

Checking:

101 - 20% = 20

101 - 20/100 = 20

101 - 1/5 = 20

101 - 1 = 20*5

100 = 100

LHS = RHS