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4. Hue is planning to run in a marathon to support her favorite charity. For each description, write both an equation and a related equation that could be used to solve the problem. Then solve the problem.
(a) Hue's sponsor plans to give $20 to her favorite charity for each mile she runs. How many miles would Hue need to run if she wants to earn $300 for her favorite charity?
(b) Hue predicts that she may only be able to run 10 mi. She still wants to earn $300 for her favorite charity. How much money should she ask her sponsor to give her per mile in order to reach her goal?

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Respuesta :

Heyo kiddo. How ya doin today? 

Part A: 
20x = 300
/20      /20
x = 15

Hue needs to run 15 miles to ear $300 for the charity. 
_____________________________________________
Part B: 
10x = 300
/10     /10
x = 30

Hue needs to be paid $30 per mile to achieve her goal. 


You're welcome. :)
musiclover10045

A) 

let m = miles

300=20m

divide each side by 20 to find m
 
300/20 = 15 miles


B)

let d = dollar amount per mile
like the first one just use 10 instead of 20

300 = 10d

divide both sides by 10 to find d

300/10 = 30 dollars per mile

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