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pencils

Expert replies
by Xbond » Tue Jun 09, 2009 9:03 pm
Hi there,

I don't undersatnd why B is right and how you can find answer with only the total value. Explain the concept


Martha bought several pencils. If each pencil was either a 23-cent pencil or 21-cent pencil, how many 23-cent pencil did Martha buy ?

(1) Martha bought a total of 6 pencils

(2) The total value of the pencils Marta bought was 130 cents
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Source: — Data Sufficiency |

by aj5105 » Tue Jun 09, 2009 9:09 pm
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by Xbond » Wed Jun 10, 2009 11:48 am
many thks
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