turkey-yks 2010 Q11

turkey-yks · Other · ygs Number Theory Linear Diophantine Equations
For natural numbers $x$ and $y$
$$\begin{array} { r | r | r } x & \frac { 10 } { m } \\ { } ^ { - } & = ^ { y } \frac { 15 } { 3 } \end{array}$$
Given this, what is the remainder when the product $x \cdot y$ is divided by 5?
A) 0
B) 1
C) 2
D) 3
E) 4
For natural numbers $x$ and $y$

$$\begin{array} { r | r | r } 
x & \frac { 10 } { m } \\
{ } ^ { - } & = ^ { y } \frac { 15 } { 3 }
\end{array}$$

Given this, what is the remainder when the product $x \cdot y$ is divided by 5?\\
A) 0\\
B) 1\\
C) 2\\
D) 3\\
E) 4