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Find the cost per yard of the wool carpet

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2 Answers

Hey Donald -- we can "rescale" the 1st buy up by 25% ... 20N + 25W is $2300 ...
 
2 extra N's cost 100 ... N= 50, 25W is 1300 ... 100W = 5200 ==> W= $52 ... Regards :)
Nylon carpet cost = x, Wool carpet cost = y
 
First purchase
16x + 20 y = 1840
 
Second purchase
18x + 25y = 2200
 
Solve these two simultaneous equations and find x and y
 

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