Kim bought a total of $4.65 worth of postage stamps in four denominations. If she bought an equal number of 10-cent and 25-cent stamps and twice as many 20-cent stamps as 5-cent stamps, what is the least number of 1-cent stamps she could have bought? Choose one:
A) 5
B) 10
C) 75
D) 90
E) 95
Let:   # of 10 and 25 cents stamps = n   # of 20 cent stamps = 2n   # of 1 cent stamps = m   Therefore:   10n + 25n + 20(2n) + m = 465 cents   75n + m = 465   Forleastnumber of 1 cents stamps, maximize 50n. Hence,   75*5 + m = 465   m = 90 i.e. 90 stamps 1 cents each   Answer: 90
<result>D</result>
Kim bought a total of $4.65 worth of postage stamps in four denominations. If she bought an equal number of 10-cent and 25-cent stamps and twice as many 20-cent stamps as 5-cent stamps, what is the least number of 1-cent stamps she could have bought?