Question

Find the percent of increase or decrease?
N to 4/5n?

Answer 1

Decrease by 20%.

Explanation:

We have to find the percent of increase or decrease from n to
`(4)/(5)n`.

Now,
`(4)/(5)n = 0.8n < n`

So there is a decrease fro n to
`(4)/(5)n`.

Now, the percentage of decrease will be given by

=
`[ \frac{\textrm {Original Value - Final Value}}{\textrm {Original Value}}]* 100 \%`

=
`[ (n - 0.8n)/(n)]* 100 \%`

= 20% (Answer)