Mila is working two summer jobs, making $9 per hour babysitting and $17 per hour lifeguarding. last week mila earned a total of $138 and worked 2 more hours lifeguarding than hours babysitting. determine the number of hours mila worked babysitting last week and the number of hours she worked lifeguarding last week.

Mila spent 4 hours at baby sitting and 6 hours at life guarding

Solution:

Given that, Mila is working two summer jobs, making $9 per hour babysitting and $17 per hour life guarding

Amount earned from babysitting = $ 9 per hour

Amount earned from life guarding = $ 17 per hour

Last week Mila earned a total of $138 and worked 2 more hours life guarding than hours babysitting

Let "b" represent the number of hours spent babysitting

Then, the number of hours spend at life guarding is b + 2

Also, total amount earned last week = $ 138

Then, we can frame a equation as:

Amount earned from babysitting x number of hours spent babysitting + Amount earned from life guarding x number of hours spend at life guarding = 138

Then, number of hours spent at life guarding:

b + 2 - 4 + 2 = 6 hours

Thus she spent 4 hours at baby sitting and 6 hours at life guarding

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