Molly makes $10 per hour babysitting and $8 per hour working at a grocery store last week she babysat for six hours the total earnings were $180 how many hours did she work the store

Answer 1

Hi Cheyanne,

I would start by making an equation to model this question. For Molly,

Earnings = 10(Babysitting Hours) + 18(Grocery Hours). In this specific case, we are given that earnings equal $180 and that Molly babysat for 6 hours that week. Thus, our equation then becomes

$180 = $10(6) + $18(Grocery Hours)

$180 = $60 + $18(Grocery Hours)

To solve for Grocery Hours, we need to isolate that variable. Thus, we will subtract $60 from both sides and divide by $18. Please see below.

$180 - $60 = $18(Grocery Hours)

$120 = $18(Grocery Hours)

$120/$18 = Grocery Hours

Thus, Molly worked 6.667 hours at the grocery store that week.

Please let me know if you would like further explanation about this question or others from your course. I'd be happy to set up a lesson!

Regards,

Danny

Answer 2

Another way to do this would be to start with the information we know:

Total earnings last week = $180.00

She earned $10 per hour babysitting and she earned $8 per hour working at the grocery store.

She worked 6 hours babysitting.

6 hrs. babysitting x $10.00 = $60.00

$180.00 total earnings last week

-$ 60.00 babysitting

$120.00 earnings working at the grocery store

$120 divided by $8.00 per hr. = 15 hrs. worked at the grocery store.

If you need further help, I would be happy to set up a lesson.