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Jenna works in an ice cream shop. When she starts her shift the tub of chocolate ice cream is 23 full. When she finishes her shift 612 h later, there is only 16 of the tub left. What was the average hourly change in tub fullness?

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MrRoyal

Answer:

[tex]Rate = 1.1/hr[/tex]

Step-by-step explanation:

Given

[tex]Start = 23[/tex]

[tex]End = 16[/tex]

[tex]Hours = 6\frac{1}{2}h[/tex]

Required

Determine the hourly rate

First, we need to determine the ice cream sold

[tex]Ice\ Cream = 23 - 16[/tex]

[tex]Ice\ Cream = 7[/tex]

Next, we calculate the hourly rate:

[tex]Rate = Ice\ Cream/Hours[/tex]

[tex]Rate = 7/6\frac{1}{2}h[/tex]

[tex]Rate = 7/\frac{13}{2}h[/tex]

[tex]Rate = 7*\frac{2}{13h}[/tex]

[tex]Rate = \frac{14}{13h}[/tex]

[tex]Rate = 1.07692307692/hr[/tex]

[tex]Rate = 1.1/hr[/tex] -- Approximated

Answer:

Step-by-step explanation:

First 2/3-1/6=1/2 1/2÷6 1/2=1/13

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