Question

A number decreased by 20% gives 20. what is the number

please answer as soon as possible​

Answer 1

Answer:

The number is 25

Step-by-step explanation:

we know that when we reduce 20% from a number we get 20

so, 20 is 80% of that number.

80% = 20

100% = ?

By cross multiplication

(100 X 20) / 80

2000/80

200/80

25

therefore

100% = 25

Answer 2

Step-by-step explanation:

New value =20 - Percentage decrease =20 - (20% × 20) =20 - 20% × 20 =(1 - 20%) × 20 =(100% - 20%) × 20 =80% × 20 =80 ÷ 100 × 20 =80 × 20 ÷ 100 =1,600 ÷ 100 =16;