Question

Mallory is on a budget and wants to determine which cereal is a better buy. A 10-ounce box of Cereal A costs $2.70 and a 13-ounce box of Cereal B costs $3.64. The store is selling each cereal in 15 ounce boxes. Which cereal is cheaper and by how much?

Answer 1

Answer:

Cereal A is cheaper by $0.15

Step-by-step explanation:

Cost of a 10-ounce box of Cereal A = $2.70

So,

Cost of a 1-ounce box of Cereal A = $\frac{2.70}{10}=\ 0.27$

Cost of a 15-ounce box of Cereal A = $0.27(15)=\ 4.05$

Also,

Cost of a 13-ounce box of Cereal B = $3.64

So,

Cost of a 1-ounce box of Cereal B = $\frac{3.64}{13}=\ 0.28$

Cost of a 15-ounce box of Cereal B = $=0.28(15)=\ 4.2$

Here,

Cost of a 15-ounce box of Cereal B - Cost of a 15-ounce box of Cereal A = $4.2-4.05=\ 0.15$

Therefore,

Cereal A is cheaper by $0.15