2011 AMC 10B Problems/Problem 5
Contents
[hide]Problem
In multiplying two positive integers and , Ron reversed the digits of the two-digit number . His erroneous product was . What is the correct value of the product of and ?
Solution
We have Since has two digits, the factors must be and so and Then,
Video Solution
~savannahsolver
See Also
2011 AMC 10B (Problems • Answer Key • Resources) | ||
Preceded by Problem 4 |
Followed by Problem 6 | |
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All AMC 10 Problems and Solutions |
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