How many .45 stamps can you buy with $9? Jan chose 200 as the correct answer. How did she get that answer?

How many .45 stamps can you buy with $9? Jan chose 200 as the correct answer. How did she get that answer?
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1 Answer

9/0.45

multiply numerator and denominator by 100

900/45=20

The answer can be 200 only if it is  a) $90   instead  of $9  or

                                                        b)  0.045 instead of 0.45

 

by Level 8 User (32.3k points)

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