Question

If 10% of a number equals 30, find 40% of that number.

Answer 1

120

Explanation:

Answer 2

120

Explanation:

So 10% of a number (let's use n) is 30.

The key word "of" tells us we need to multiply. Therefore, 10% times n is 30:

`10\%(n)=30`

10% is the same as 0.1. So:

`0.1n=30`

Divide both sides by 0.1:

`n=300`

So, our number is 300.

To find 40% of 300, multiply 0.4 and 300. Thus:

`.4(300)=120`

Our answer is 120.

And we're done!