Please help me. I am having some trouble on this problem.

Answer:
Step-by-step explanation:
I don't know if we are supposed to use the numbers from the previous problem. If not, then what ever number you choose will be 7 times the size of the protein. So let's assume that the givens follow question 2.
The amount of protein = x
The amount of carbs = (700/100)*x
proteins + carbs = 100%
x + 7x = 100 Combine the left
8x = 100 Divide by 8
8x/8 = 100/8
x = 12.5
Protein = 12.5 carbs
Carbs = 7*12.5 = 87.5 grams
So both cereals contain 12.5 grams of proteins and 87.5 grams of carbs.
Answer:
Tasty Oats: 84 g carbohydrate in 100 g of cereal
Cornbits: 35 g of carbohydrate in 45 g of cereal
Step-by-step explanation:
The introduction to this problem set tells us ...
Tasty Oats have 12 g of protein in 100 g of cereal
Cornbits have 5 g of protein in 45 g of cereal
___
Then 700% of these amounts will be ...
Tasty Oats:
carbohydrates = 700% × 12 g = 84 g . . . . in 100 g of cereal
CornBits:
carbohydrates = 700% × 5 g = 35 g . . . . . in 45 g of cereal
_____
Of course, 700% = 700/100 = 7, so multiplication by 700% is multiplication by 7.