Respuesta :
To obtain the value of the amount earned for each mile walked, the quantities required are ; the amount earned for a given number of miles.
The amount raised per mile for each of the three include :
- Beth = $20
- Manuel = $15
- Petra = $15
To obtain the unit rate, which is the amount earned for each mile walked ; we take the ratio of the amount earned for specified number of miles.
Amount raised by Beth :
y = 20x
The slope value of the equation represents the amount raised, y for each mile, x walked which is $20
Amount raised by Manuel :
From the table :
3 miles = $45
Let the amount raised for walking 1 mile = a
Hence, we have ;
3 miles = $45
$1 = x
Cross multiply :
3x = $45
Divide both sides by 3
3x/3 = $45/3
x = $15
Amount raised by Petra :
Petra is said to earn $15 per mile
Therefore, both Manuel and Petra earn the same amount per hour, while Beth earned $5 per hour more than Petra's earning.
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