Sara has $460 in 5-and 10-dollar bills only. If she has fewer 10-than 5-dollar bills, what is the least possible number of 5-dollar bills she could have?	Select:
A) 32
B) 30
C) 29
D) 28
E) 27
5a + 10b = 460   a&gt; b   Pick an easy number to work with.   suppose a=30.   Then you have 150.   You need another 310 and that means you need b=31 which is greater than a.   Therefore, a &gt; 30.   The only answer choice where a &gt; 30 is if a = 32.   32 is the answer.
<result>A</result>
Sara has $460 in 5-and 10-dollar bills only. If she has fewer 10-than 5-dollar bills, what is the least possible number of 5-dollar bills she could have?