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Komok [63]
3 years ago
8

How can you use a rate to compare the costs of two boxes of cereal that are different sizes?

Mathematics
2 answers:
Rainbow [258]3 years ago
3 0

Answer:

✖ both sides

Step-by-step explanation:

you take both numbers and you multiply it

Nezavi [6.7K]3 years ago
3 0

Let's say you had two boxes of cereal labeled A and B. Also let's come up with a hypothetical situation that...

  • box A costs $2 and weighs 10 ounces
  • box B costs $3 and weighs 20 ounces

The question is: which is the better deal? By that I mean which is cheaper per ounce.

-----------------------

For box A, we have this ratio

2 dollars : 10 ounces

If we divide both sides by 10, then we end up with

2/10 dollars : 10/10 ounces

0.20 dollars : 1 ounce

20 cents : 1 ounce

This tells us that the unit rate for box A is 20 cents per ounce. In other words, 1 ounce costs 20 cents or each ounce costs 20 cents.

-----------------------

Do a similar thing for box B

3 dollars : 20 ounces

3/20 dollars : 20/20 ounces

0.15 dollars : 1 ounce

15 cents : 1 ounce

So box B costs 15 cents per ounce

-----------------------

In summary,

Box A's unit rate is 20 cents per ounce

Box B's unit rate is 15 cents per ounce

Box B is the better deal since it's 5 cents cheaper per ounce.

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Step-by-step explanation:

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