Michael cashed a check for $1,100 and received only $10 and $50 bills in return. During the course of a day, he used 15 bills and then lost the rest of the money. If the number of $10 bills used was either one more or one less than the number of $50 bills used, what is the minimum possible amount of money that was lost?
Choose the correct choice from the following:
A) $630
B) $800
C) $770
D) $730
E) $700
1. 15 bills spent   2. Number of $10 bills is one more or one less than number of $50 bills.   So, 2 choices   1. 7*10 + 8*50 = $470   2. 8*10 + 7*50 = $430   Least money lost implies most money spent. i.e $470   Therefore, lost money = 1100 - 470= 
<gadget id="calculator">1100 - 470</gadget>
<output>630</output>
630.   $630nswer $630
<result>A</result>
Michael cashed a check for $1,100 and received only $10 and $50 bills in return. During the course of a day, he used 15 bills and then lost the rest of the money. If the number of $10 bills used was either one more or one less than the number of $50 bills used, what is the minimum possible amount of money that was lost?