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If Standard Jeans

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Asmakan

Senior Manager

Joined: 17 Aug 2019

Posts: 347

If Standard Jeans [#permalink]

25 Sep 2020, 01:31

00:00

Question Stats:

83% (02:07) correct

16% (02:09) wrong

based on 18 sessions

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If Standard Jeans cost $60 and Designer Jeans cost 150% more, and 29 total pairs of jeans are sold for a total of $3,540, how many pairs were Designer Jeans?

a) 2
b) 9
c) 18
D) 20
E) 23

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Farina

Senior Manager

Joined: 10 Feb 2020

Posts: 496

Re: If Standard Jeans [#permalink]

25 Sep 2020, 02:47

60S + 150D = 3540
Also given,
S + D = 29
D=29-S

put in:
60S + 150(29-S) = 3540

Solve for S:
-90S + 810 = 0
810 = 90S
S=9

S + D = 29
9 + D = 29

D = 20 option D
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