Question

number when decreased by 20% gives the 80.. Find the number​

Answer 1

Step-by-step explanation:

let the number be x

x-20/100×x=80

x-1x/5=80

now making the denominator equal

5x/5 - 1x/5=80

4x/5=80

x=80×5/4

x=100

Answer 2

Answer:

The number is 100.

Step-by-step explanation:

• Let the number be x.
• The number was decreased by 20% i.e. 20/100 of x = 20x/100.
• After decreased by 20% , the number is

(x - 20x/100) which is 80.

Hence we can write

(x - 20x/100) = 80

=> 80x/100 = 80

=> x = 100

So the number is 100.