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Money problem

by neerajkumar1_1 » Sat Apr 10, 2010 11:04 pm
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
1) She bought 4.40$ worth of stamps.
2) She bought an equal number of $0.15 stamps and $0.29 stamps.
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Source: — Data Sufficiency |
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by thephoenix » Sat Apr 10, 2010 11:12 pm
its A only a combination is possible
bth are 10
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by neerajkumar1_1 » Sat Apr 10, 2010 11:18 pm
thephoenix wrote:its A only a combination is possible
bth are 10
Is the solution dependent on trial and error method or is there some basic fundamental of getting this answer...
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by thephoenix » Sat Apr 10, 2010 11:50 pm
i tried explainig here hope it helps u
https://www.beatthegmat.com/ds-fastest-s ... tml#241731
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by anoopprasad » Sat Apr 10, 2010 11:52 pm
C - both needed
0.15x + 0.29x = 4.4
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