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2 years ago

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Justin is working two summer jobs, making $8 per hour babysitting and $14 per hour lifeguarding. Last week Justin earned a total

of $92 and worked 4 times as many hours babysitting as he worked hours lifeguarding. Determine the number of hours Justin worked babysitting last week and the number of hours he worked lifeguarding last week.

1 answer:

alexdok [17]2 years ago

6 0

Answer:

Justin worked as a babysitter 8 hours and worked as a lifeguard 2 hours last week

Step-by-step explanation:

Let

x ----> number of hours worked as a babysitter last week

y ----> number of hours worked as a lifeguard last week

we know that

$8x+14y=92$ ----> equation A

$x=4y$ ----> equation B

Solve the system by substitution

Substitute equation B in equation A

$8(4y)+14y=92$

solve for y

$32y+14y=92$

$46y=92$

$y=2$

Find the value of x

$x=4(2)=8$

therefore

Justin worked as a babysitter 8 hours and worked as a lifeguard 2 hours last week

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Read 2 more answers

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<u>Given</u>:

Given that the regular decagon has sides that are 8 cm long.

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<u>Area of the regular decagon:</u>

The area of the regular decagon can be determined using the formula,

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Thus, the area of the regular decagon is 642 cm²

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