How do you go about finding the answer to a question when you know how much 3 sweaters cost but need to find out how much 7 sweaters cost?

If 3 sweaters cost $40.35 , how much would 7 sweaters cost?

Question

How do you go about finding the answer to a question when you know how much 3 sweaters cost but need to find out how much 7 sweaters cost? 

If 3 sweaters cost $40.35 , how much would 7 sweaters cost?

pfenn1 · Answer

Let's simplify the problem so you can get the idea.  If 3 sweaters cost $3, how much would each sweater cost?

anonymous · Answer

1 dollar.

pfenn1 · Answer

How did you figure that out?

anonymous · Answer

Well, 3 sweaters is $3, so it is naturally $1 a sweater.

pfenn1 · Answer

okay, so if 3 sweaters cost $40.35, how much would each sweater cost?

anonymous · Answer

$10 a sweater.

pfenn1 · Answer

okay, so if 3 sweaters cost $40.35, how much would each sweater cost?

anonymous · Answer

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