Question

A number is increased by 10% and the the increased number is is decreased bye 10% show show that the the net decreased is 1%

Answer 1

Answer:

Step-by-step explanation:

Let a number to be 100

Step- 1:

The supposed number increases by 10%

We know that, 10% of 100 is 10.

So the new number formed will be 100+10=110.

Step-2:

Now, the no. formed is further decreased by 10%

10% of 110 =11

Decreased no. formed = 110-11 = 99

Step-3:

Difference between supposed no. And the last new no. formed= 100-99 = 1

Step -4 :

% difference = 1/100*100=1% (net decrease from 100 to 99)

Hence proved!!