Bunuel wrote:

Carlos worked 40 hours last week, including 4 hours on Sunday. He earns $10.50 an hour regularly and 3/2 times that on Sunday. How much did he earn last week?

A. $357

B. $399

C. $420

D. $441

E. $483

We are given that Carlos’s regular pay is $10.50 per hour, and since he’s paid 3/2 times that on Sunday, he’s paid 10.5 x 1.5 = 15.75 per hour on Sunday. Since he worked a total of 40 hours, which included 4 hours on Sunday, he worked 36 hours on days other than Sunday. Thus, last week he earned:

(36 x 10.5) + (4 x 15.75) = 378 + 63 = $441

Answer: D

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