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smc

prealgebra senior

Problem

On a trip from the United States to Canada, Isabella took U.S. dollars. At the border she exchanged them all, receiving Canadian dollars for every U.S. dollars. After spending Canadian dollars, she had Canadian dollars left. What is the sum of the digits of ?
(A)
(B)
(C)
(D)
Solution
Isabella had Canadian dollars. Setting up an equation we get , which solves to , and the sum of digits of is .
Final answer
A