2021 JMPSC Sprint Problems/Problem 2: Difference between revisions
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==See also== | |||
#[[2021 JMPSC Sprint Problems|Other 2021 JMPSC Sprint Problems]] | |||
#[[2021 JMPSC Sprint Answer Key|2021 JMPSC Sprint Answer Key]] | |||
#[[JMPSC Problems and Solutions|All JMPSC Problems and Solutions]] | |||
{{JMPSC Notice}} | |||
Revision as of 16:12, 11 July 2021
Problem
Brady has an unlimited supply of quarters (\$0.25), dimes (\$0.10), nickels (\$0.05), and pennies (\$0.01). What is the least number (quantity, not type) of coins Brady can use to pay off \$
?
Solution
It is generally best to use the smallest number of coins with the most value, specifically the quarters, for taking away a big chunk of the problem. We are able to fit 
quarters, or 
into 
. That only leaves 
cents. We cannot put any nickels nor dimes, therefore we require three pennies to get a total of .
The least number of coins Brady can use to pay off will be 
coins.
-OofPirate
See also
The problems on this page are copyrighted by the Junior Mathematicians' Problem Solving Competition. 
