Question

a no. is inc. by 20% and then dec. by 20% . find the net inc. or dec. %

Answer 1

Hey mate :

Incresed by 20 %

and

Decreased by 20%

Here ,

Let no is 100

100 Incresed by 20% = 100 + x

( 100 + x) Decreased by 20

We know when a no Increased by A% and Then Decreased by A% then no is decraesed.


Then

Total decreasing = x*x/100

==> 20*20/100

==> 400/100

==> 4

So Total decreasing : 4

Then Total decreasing % = 4 × 100/100

=4%




Hope it helps you.

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