Difference between revisions of "1966 AHSME Problems/Problem 16"

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== Solution ==
 
== Solution ==
 
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<math>\fbox{B}</math>
  
 
== See also ==
 
== See also ==

Revision as of 01:29, 15 September 2014

Problem

If $\frac{4^x}{2^{x+y}}=8$ and $\frac{9^{x+y}}{3^{5y}}=243$, $x$ and $y$ real numbers, then $xy$ equals:

$\text{(A) } \frac{12}{5} \quad \text{(B) } 4 \quad \text{(C) } 6 \quad \text{(D)} 12 \quad \text{(E) } -4$

Solution

$\fbox{B}$

See also

1966 AHSME (ProblemsAnswer KeyResources)
Preceded by
Problem 15
Followed by
Problem 17
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All AHSME Problems and Solutions

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