Anna bought a sweater at 40% off the original price. if she paid $12, what was the original price of the sweater?

The original cost was 20 dollars.

Step-by-step explanation:

$12 represents 60% of the original price.

Set up a proportion

Cross multiply Reduce 100/100 to 1

60/100 * x = 12 * 100/100

Multiply by 100

60/ 100 * x = 12

Divide by 60

60x = 12*100

60x = 1200                                      

60x/60 = 1200/60

x = 20 dollars.

The original price of the sweater was $20.

In this problem, 40% is the amount of discount. We can subtract 40% from 100% because our original price will always be 100%

We can now change this problem to 12 is 60% of what number?

12 is 60% of X

Equation: Y = P% * X

Solving our equation for X

X = Y/P%

X = 12/60%

Converting percent to decimal:

P = 60%/100 = 0.6

X = 12/0.6

X = 20

Therefore, the original price of the sweater was $20

x = -2

y = 848

step-by-step explanation:

plug in the numbers

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: