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various charges made

by sanju09 » Thu Mar 04, 2010 4:59 am
The table attached shows the various charges made by two companies for the same air conditioner. What is the total amount that can be saved on the purchase and installation of the air conditioner by dealing with the company that offers the lower total charge?
(A) $41.60
(B) $45.00
(C) $50.75
(D) $55.75
(E) $59.60
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airconditioner.docx
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Last edited by sanju09 on Mon Mar 08, 2010 1:08 am, edited 1 time in total.
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by yeahdisk » Thu Mar 04, 2010 8:03 am
I think your attachment has an error in the unit prices
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by sanju09 » Mon Mar 08, 2010 1:10 am
yeahdisk wrote:I think your attachment has an error in the unit prices
Oh yes, it is now fixed
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by hooliganpete » Mon Mar 08, 2010 6:20 pm
Company X:
Unit: $575
Surcharge 4%
Installation charge: $82.50

Company Y:
Unit: $530
Surcharge: 3%
Installation charge: $93.00

Questions asks for the Purchase Price and Installation only.

Company X = $575+$82.50+.04($575) = $680.50
Company Y = $530+$93.00+.03($530) = $638.90

X-Y or $680.50-$638.90 is the price difference aka amount saved by going with the cheaper company[spoiler] (Company Y) is $41.60 or A[/spoiler][/spoiler]
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