Question

A number is increased by 20% and then
decreased by 20%, the final value of the
number:​

Answer 1

Answer:

0.96 times of original

Step-by-step explanation:

Let any number 'a'.

It is first increased by 20%:

= > a + (20% of a)

= > a + (20/100 of a )

= > a + (0.2a)

= > 1a + 0.2a

= > 1.2 a

Then, it is decreased by 20%:

= > 1.2a - (20% of 1.2a)

= > 1.2a - (20/100 of 1.2a)

= > 1.2a - (0.2 * 1.2a)

= > 1.2a - 0.24a

= > 0.96a

Final value is 0.96 times of the original number.