Bills family is driving across the country on vacation . They plan to stop at historical sites in each state they drive through.
1 answer:
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Answer:
The least number of stamps required is
Step-by-step explanation:
Let the number of cent stamps be
and
cent stamps be
We have
The minimum number is obtained when more cent stamps are used
Here cannot be greater than
since
Substitute
Not possible since is not a fraction
Substitute
Not possible since is not a fraction
Substitute
Possible
Hence minimum number of stamps is