Question

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

Answer 1

Answer:

120

Step-by-step 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!

Answer 2

Answer:

120

Step-by-step explanation: