Roses can be purchased individually for $5.30, one dozen for $36, or two dozen for $50. What is the greatest number of roses that can be purchased for $680?	Options.
A) 156
B) 162
C) 317
D) 324
E) 325
Buy as many $50 deals as possible. We can by   650/50= 
<gadget id="calculator">  650/50</gadget>
<output>13</output>
13 two dozen roses, thus total of 13*24= 
<gadget id="calculator">13*24</gadget>
<output>312</output>
312 roses.   We are left with   680 - 650= 
<gadget id="calculator">  680 - 650</gadget>
<output>30</output>
$30. We can buy 30/5.3= ~5 roses for that amount.   Total = 312 + 5= 
<gadget id="calculator">312 + 5</gadget>
<output>317</output>
317.   Answer: 317.
<result>C</result>
Roses can be purchased individually for $5.30, one dozen for $36, or two dozen for $50. What is the greatest number of roses that can be purchased for $680?