Answer:
13.6
Step-by-step explanation:
It takes 3/9 to make 1/3.
You multiply the 1 (in 1/3) by 3, and you multiply the 3 (in 1/3) by 3. You get 3/9. You needed to multiply by 3 to make 1/3 have a common denominator is 9.
Multiply by .88, he paid $792