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Mathematics 11 Online
OpenStudy (anonymous):

The field hockey team is holding several fundraisers to save up enough money to buy team jackets. Babysitting earns $6 per hour more than washing cars. Together the team worked 8 hours washing cars and 25 hours babysitting and earned a total of $414.Which system of equations best represents the situation above?Note: In all of the choices below, e represents money earned, r represents rate, and t represents time. Select one: a. e=x*8 414-e=(x)*(25-8) b. e=x*8 414-e=(x+6)*25 c. e=(x+6)*8 414-e=(x)*25 d. 414=x*8 e=(x+6)*25

OpenStudy (aum):

Let the rate for washing cars be $x / hr. Then, the rate for babysitting is $(x + 6) / hr. If 8 hours were spent on washing cars, at the rate of $x / hr., how much would have been earned washing cars?

OpenStudy (anonymous):

8

OpenStudy (anonymous):

the answers is b now can i get your number

OpenStudy (aum):

1 hour of car washing will earn $x 8 hours of car washing will earn $8x. If e is the money earned washing cars, then e = 8x. Total money earned = $414. Total money earned washing cars is e. How much money was earned babysitting?

OpenStudy (anonymous):

25

OpenStudy (aum):

No. 25 is the number of hours spent babysitting. Total money earned = $414. Total money earned washing cars is e. How much money was earned babysitting? The answer is $414 - e. Total money earned babysitting can also be calculated knowing the rate was $(x+6) per hour and 25 hours of spent on babysitting. Therefore, 414 - e = (x+6)*25

OpenStudy (anonymous):

oh ok thank you i know what you did

OpenStudy (aum):

you are welcome.

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