Question

two glasses of milk and 3 snack bars have a total of 58 carbohydrates​ (carbs), and 4 glasses of milk and 2 snack bars have a total of 76 carbs. Determine how many carbs are in one glass of milk and in one snack bar.

Answer 1

Answer:

14 carbs in milk

10 carbs in snack bars

Step-by-step explanation:

Glasses of Milk = m

Snack Bars = s

I am going to make this a system of equations:

2m + 3s = 58

4m + 2s = 76

I am going to simplify one of them for a s:

4m + 2s = 76

2s = 76 - 4m

s = 38 - 2m

I am going to insert this into the other equation:

2m + 3s = 58

2m + 3(38 - 2m) = 58

2m + 114 - 6m = 58

(-4)m + 114 = 58

(-4)m = -56

m = 14 calories

I am going to plug this m into one of the equations (doesn't matter which):

2(14) + 3s = 58

28 + 3s = 58

3s = 30

s = 10

You can plug these values back into each of the equations to make sure they work.

Hope it helps! (: