What multiplier would you use to decrease by 10%

Answer: 0.1

Step-by-step explanation:

10% as a decimal is 0.1

if you were to decrease something by 10 percent, such as a price, multiply the number by 0.1, then subtract the number.

Example:

$25 is 10% off

25*0.1=2.5

25 - 2.5 = 22.5

When $25 is 10% off, then the price will be $22.50