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25-02-2016
Mathematics

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A girl buys a shirt that was originally $45 but is now $15. What is the rate of change?

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25-02-2016

so first we find the change
45 to 15=45-15=30

change is 30
rate of change=(change)/(original)

original=45
change=30
30/45=10/15=2/3=0.66666666=66%
rate of change is 66.66%

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