Did Jeff record more sales revenue this month than Dan did?

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Did Jeff record more sales revenue this month than Dan did?

(1) Jeff earned 20% more in sales commission this month than Dan did.

(2) Dan earns 6% commission on his sales, and Jeff earns 8% commission on his.

OA C

Source: Veritas Prep

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by swerve » Fri Oct 19, 2018 9:47 am

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NOTE: Commission = (x%)*Revenues;
Sales Commission = (x%)*(Sales Revenues). Therefore, C = (x%)*R
Question: Jr > Dr?
1) Jc = 1.2*Dc
2) Jc = 0.08*Jr & Dc = 0.06Dr

1+2) Jc = 1.2*Dc
=> 0.08*Jr = 1.2*0.06*Dr
=> 8*Jr = 1.2*6*Dr
=> Jr = (7.2/8)*Dr | 72/80 = 9/10 = 0.9
=> Jr = 0.9*Dr
=> Jr < Dr | Answer C.