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Mathematics, 15.04.2021 02:50 bellagvjh1760

Please help me ASAP AND explain the steps plz. Zymirah earns 5% commission on all sales at a jewelry store plus $10 an hour. Yesterday she sold $3,200 in merchandise and earned a total of $240. How many hours does she work?
a. 8 hours
b. 12 hours
C. 32 hours
d. 160 hours

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