Question

A number is incrased by 20percent and the increased number is decreased by20 percent .find the increase or decrease percent.

Answer 1

Heya user !!!

Here's the answer you are looking for

Let the number be x

When it is increased by 20%, it becomes

x + 20x/100

= x + x/5 = 6x/ 5

Now, it is decreased be 20%, it becomes

6x/5 - 20/100 × (6x/5)

= 6x/5 - 6x/25

= 24x/25

Thus, the number decreases

The number decreases by

(x - 24x/25)

= x/25

Therefore, percentage decrease

= (x/25)/x × 100%

= 100/25 %

= 4%

Therefore, the number decreases by 4%



★★ HOPE THAT HELPS ☺️ ★★