If you combine the partial crates, pending on how full and how many you have it will vary how many full crates of oranges can be sold.
You have the equations set up correctly. I will use r and b as the variables to make it easier to follow.
12r + 8b = 70
20r + 12b = 110
First let's solve one of the equations for one of the variables.
12r = 70 - 8b

Now plug that in for r in the second equation.

Simplify



b = 5 grams
Now plug 5 in for b in one of the original equations to find r.
12r + 8(5) = 70
12r = 30
r = 2.5 grams
So the red marbles weigh 2.5 grams, and the blue marbles weigh 5 grams.
Answer:
1. 5
2. 8
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
A 3x =\ x^3
B 12x - 10 =\ 14x-10
C 12x + 16x = 12x +16x
Answer:
30"
Step-by-step explanation:
We know:
E = 3*s - 11
E = 79"
Setting them both equal:
79 = 3s - 11
add 11 to both sides
79 + 11 = 3s - 11 + 11
Simplify
90 = 3s
divide both sides by 3
90 / 3 = 3s / 3
Simplify
s = 30"