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2011AMC10
–A
1Acellphoneplancostseachmonth,pluspertextmessagesent,plus10foreachminute
usedoverhours.InJanuaryMichellesenttextmessagesandtalkedforhours.How
muchdidshehavetopay?
(A)(B)(C)(D)(E)
2Asmallbottleofshampoocanhold35millilitersofshampoo,whereasalargebottlecanhold
500millilitersofshampoo.Jasminewantstobuytheminimumnumberofsmallbottlesnec-
essarytocompletelyfillalargebottle.Howmanybottlesmustshebuy?
(A)(B)(C)(D)(E)
3Supposedenotestheaverageofand,anddenotestheaverageof,,and.
Whatis?
(A)(B)(C)(D)(E)
4Letandbethefollowingsumsofarithmeticsequences:
Whatisthevalueof?
(A)(B)(C)(D)(E)
5Atanelementaryschool,thestudentsinthirdgrade,fourthgrade,andfifthgraderunanaver-
ageof,,andminutesperday,respectively.Therearetwiceasmanythirdgradersas
fourthgraders,andtwiceasmanyfourthgradersasfifthgraders.Whatistheaveragenumber
ofminutesrunperdaybythesestudents?
(A)(B)(C)(D)(E)
6Sethas20elements,andsethas15elements.Whatisthesmallestpossiblenumberof
elementsin,theunionofand?
(A)(B)(C)(D)(E)
1
2011AMC10
7Whichofthefollowingequationsdoes
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