2013 AMC 10B Problems/Problem 9

Revision as of 19:27, 21 February 2013 by JWK750 (talk | contribs) (Problem)

Problem

Three positive integers are each greater than $1$, have a product of $27000$, and are pairwise relatively prime. What is their sum?

$\textbf{(A)}\ 100\qquad\textbf{(B)}\ 137\qquad\textbf{(C)}\ 156\qquad\textbf{(D)}}\ 160\qquad\textbf{(E)}\ 165$ (Error compiling LaTeX. Unknown error_msg)

Solution

The prime factorization of $27000$ is $2^3*3^3*5^3$. These three factors are pairwise relatively prime, so the sum is $2^3+3^3+5^3=8+27+125=$ $\boxed{\textbf{(D) }160}$