I need help on these questions can u make sure u do all of them cuz some people just only do one problem.

Answer:
4. 28 2/4 ounces
5. 3.75
Step-by-step explanation:
4.
6 × 4 = 24
6 × 3/4 = 18/4 = 4 2/4
24 + 4.5 = 28.5 or 28 2/4 or 28 1/2
5.
5 × 3 = 15
5 × 0.25 = 1.25
15 + 1.25 = 16.25
20 - 16.25 = 3.75
Answer:
I only know 5 but it is $3.75 left in his account!
Step-by-step explanation:
20-3.25= 16.75-3.25 =13.5-3.25= 10.25-3.25= 7-3.25=3.75