NFLFan10452
Answered

Discover the answers you need at Westonci.ca, where experts provide clear and concise information on various topics. Get detailed and precise answers to your questions from a dedicated community of experts on our Q&A platform. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

Alex works as an office clerk and his office job pays him $11 per hour. Monica works as a cashier and her job pays her $12.75 per hour. Together, they worked 45 hours and earned a total of $530.

How many hours did Monica work in her job?

A.
20

B.
25

C.
30

D.
35

Sagot :

Alex_Hours + Monica_Hours = 45
Alex_Hours * 11 + Monica_Hours * 12.75 = 530

From the first equation:
Alex_Hours = 45 - Monica_Hours

Substituting into the section equation gives:
(45 - Monica_Hours) * 11 + Monica_Hours * 12.75 = 530
495 - Monica_Hours * 11 + Monica_Hours * 12.75 = 530
Monica_Hours * 12.75 - Monica_Hours * 11 = 530 - 495 = 35
Monica_Hours * (12.75 - 11) = 35
Monica_Hours * 1.75 = 35
Monica_Hours = 35 / 1.75 = 35 / (7 / 4) = 35 * 4 / 7 = 5 * 4 = 20

Monica worked 20 hours -- Answer A.
AestheticPerson

Answer:

The answer is A

Hope that helps

We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.