By using the exact same method I provided on your last question we get..
1.

2.
Answer:
40 cups of sugar
Step-by-step explanation:
10 cups = 3 eggs
x cups = 12 eggs( a dozen )
12*10 =3x
120=3x
120/3=40
-6x+3=45
-3 -3 subtract
-6x=45
Divide both sides by -6
X=-7
I think this is the answer
Answer:
180
Step-by-step explanation:
For each boy you choose, you choose one of the 15 girls.
This is the counting principle.
12 * 15 = 180
Answer: 180