Answer:
a, 6
Step-by-step explanation:
7x + 2y = 48
7x + 2(3) = 48
7x + 6 = 48
7x = 48 - 6
7x = 42
x = 42 / 7
x = 6
The answer is A divided 200 by 4 and get 50
So for this you will be doing proportions, and in this case the equation will be 
Firstly, you will cross multiply. Your equation should look like this: 
After that, just divide 24 on each side and your answer will be 
In short, she can wrap 72 presents in 15 hours.