AMC 12B 2012 Problem 11

Past Contests AMC 12 2012 Part B
, , , ,
1

In the equation below, A and B are consecutive positive integers, and A, B, and A+B represent number bases:

132_{A}+43_{B}=69_{A+B}

What is A+B ?

Answer Choices
A. 9
B. 11
C. 13
D. 15
E. 17