During a sale, $2 bars of soap were sold of a rate of 3 for $5. How much is saved on 9 bars?

You saved $12.6

3 divided by $5 = 0.6

0.6 x 9 = $5.4

9 x $2 = $18

$18 - $5.4 = $12.6

Answer: 3 dollars is saved on 9 bars

Step-by-step explanation:

Original price of one bar soap is $2

Original cost of 3 bars would be 2*3 = $6

But it was sold at a rate of 3 bars for $5. Amount of money saved on 3 bars would be 6 - 5 = $1

If another 3 bars are bought for $5, the amount saved will be $1 again.

If 3 extra bars are bought for $5, the amount saved will be $1

Total number of bars bought is 3 + 3 + 3 = 9

Total amount saved = 1 + 1 + 1 = $3

Checking,

3 bars = $5

9 bars = (9*5) / 3 = $15

Originally, 9 bars = 9*2 = $18

Amount saved = 18 - 15 = $3