The amount that Susan charges per hour for babysitting are directly proportional to the number of children she is watching. She charges $4.50 for 3 kids.
How much would she charge to babysit 5 kids?

Correct result:

x =  7.5 USD


x=4.50 53=152=7.5 USDx=4.50 \cdot \ \dfrac{ 5 }{ 3 }=\dfrac{ 15 }{ 2 }=7.5 \ \text{USD}

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