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dsp73
3 years ago
7

Suppose you have a job teaching swimming lessons and get paid $8 an hour. You also have a job as a cashier and get paid $10 an h

our. If you cannot work more than 22 hours a week, what are the number of hours you can work at each job and still make at least $190?
Mathematics
2 answers:
dedylja [7]3 years ago
6 0

Answer:

One has to work 7 hours as a cashier and 15 hours as a swimming teacher.

Step-by-step explanation:

Suppose you have a job teaching swimming lessons and get paid $8 an hour. Let this be represented by 's'

You also have a job as a cashier and get paid $10 an hour. Let this be represented by 'c'

Given is you cannot work more than 22 hours a week, so equation forms:

s+c\leq 22

This becomes s\leq 22-c

What are the number of hours you can work at each job and still make at least $190 is represented by :

8s+10c\geq 190

Putting values of 's' here,

8(22-c)+10c\geq 190

176-8c+10c\geq 190

2c+176\geq 190

2c \geq 190-176

2c \geq 14

c \geq 7 hours

So, s = 22-7=15 hours

So, one has to work 7 hours as a cashier and 15 hours as a swimming teacher to make at least $190.

marusya05 [52]3 years ago
3 0
If you worked 19 hours per week at the cashier job, plus three hours a week doing swimming lessons, you'd be working 22 hours exactly, and making $214 per week. I hope this helps, and good luck! :)
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