Korina had 20 dollars to spend on 3 gifts. She spent 8 7 10 dollars on gift A and 3 2 5 dollars on gift B. How much money did she have left for gift C?

$7.90 left.

Step-by-step explanation:

Given:

Korina had 20 dollars to spend

She spent dollars on gift A.

She spent dollars on gift B.

Question asked:

How much money did she have left for gift C ?

Solution:

Korina had money =$20

Spent on gift A =  

Spent on gift B =  

Total money spend = $8.70 + $3.40 = $12.10

Money left for gift C = Total money, she had - Money spend on two gift

                                  = $20 - $12.10 = $7.90

Thus, she has $7.90 left for gift C.