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The cost of 40 pens, 44 pencils and 50 Erasers is $392.
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31 Aug 2022, 12:24
31 Aug 2022, 12:24
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75% (01:51) correct
25% (01:10) wrong based on 8 sessions
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The cost of 40 pens, 44 pencils and 50 Erasers is $392. The cost of 46 pens, 54 pencils and 60 erasers is $466. If the cost of 109 pens, 125 pencils and 140 Erasers is $N, find N.
A. 545.5
B. 1091
C. 2182
D. 2500
E. Data Insufficient
A. 545.5
B. 1091
C. 2182
D. 2500
E. Data Insufficient
Re: The cost of 40 pens, 44 pencils and 50 Erasers is $392.
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31 Aug 2022, 22:06
31 Aug 2022, 22:06
Expert Reply
40a+44b+50c=392.....(1)
46a+54b+60c=466.......(2)
Multiply equation (2) by 3/2, and add to equation (1), we get
109a+125b+140c=1091
46a+54b+60c=466.......(2)
Multiply equation (2) by 3/2, and add to equation (1), we get
109a+125b+140c=1091
gmatclubot
Re: The cost of 40 pens, 44 pencils and 50 Erasers is $392. [#permalink]
31 Aug 2022, 22:06
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