In a supermarket the single-yolk and double-yolk eggs got mixed. If the total number of yolks was 15 more than the total number of eggs. Find the number of double-yolk eggs. Choose the correct choice from the following choices:
A) 8	B) 13	C) 15	D) 11	E) 5
Let the number of single-yolk eggs be X and the number of double-yolk eggs be Y. Then   =&gt; X+(2*Y)= 15+(X+Y)   =&gt;2Y=15+Y   =&gt;Y=15   Option 15
<result>C</result>
In a supermarket the single-yolk and double-yolk eggs got mixed. If the total number of yolks was 15 more than the total number of eggs. Find the number of double-yolk eggs.