Answer:
1. 75 grams of Toasty Oats for 9 grams of protein
2. Toasty Oats
Explanation:
By using cross multiplication we can figure out how many grams of Toasty Oats is needed for 9 grams of protein:
(x) being the grams of toasty oats.
Cross multiply: 12x = 900
solve for x: 900/12 = x
x = 75 grams of toasty oats needed for 9 grams of protein
To find which one has the better ratio of proteins to grams of cereal,
we can multiply the amount of cereal together to get the same denominator
12/100 and 5/45
12/100 * 9
5/45 * 20
to get the same denominator
108/900 and 100/900
we can see the (12/100)*9 has more protein to grams of cereal ratio than (5/45)*20.