Question

How do you find the new amount given 120 books increased by 55%?

Answer 1

`186` books

Explanation:

Think of `120` as `100%`

Now if you increase something by `55%`, then basically you want to find what `155%` of `120` is because of `100+55=155%`

To find what `155%` of `120` is, you can write it as

`120=100%`
`x=155%`

So,
`x=120times155/100`

`x=186`