Difference between revisions of "2011 AMC 10B Problems/Problem 5"
(Created page with '== Problem 5 == In multiplying two positive integers <math>a</math> and <math>b</math>, Ron reversed the digits of the two-digit number <math>a</math>. His erroneous product was…') |
(No difference)
|
Revision as of 19:16, 25 May 2011
Problem 5
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
Since the was the erroneous product of two integers, one that had two digits, the two factors have to be and . Reverse the digits of the two-digit number so that is . Find the product of and .