The numbers of pizza slices that are sold in Joey's Pizza are only in quantities of 5 and 6 slices per customer. How many slices cannot be bought?  Pick one.
A) 48.	B) 54.	C) 62.	D) 51.	E) 22.
Answer:	Let X pizzas of 5 slices and Y pizzas of 6 slices.   5X + 6Y.   Lets check options wise.   A. 48 =&gt; 5(6) + 6(3)   B. 54 =&gt; 5(6) + 6(4)   C. 62 =&gt; 5(10) + 6(2)   D. 51 =&gt; we can't write anything with 4 and 6 series..Lets try 5(6) + 6(3) = 48 , 5(8) + 6(2) = 52 , nothing works out   E. 22 =&gt; 5(2) + 6(2)   Answer: correct option is 51.
<result>D</result>
The numbers of pizza slices that are sold in Joey's Pizza are only in quantities of 5 and 6 slices per customer. How many slices cannot be bought?