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Cary earned $56 for 7 hours of babysitting. Part A: What is Cary's unit rate for babysitting? Part B: At this rate, how much would Cary earn for 55 hours of babysitting?

Respuesta :

llama1160
8$ an hour, she’d earn 440$ for 55 hours
tojuaghante

Answer:

Part A=8

Part B= 440

Step-by-step explanation:

Part A; unit rate = per hour rate= 1hr=$x

From question,

7hours =$56

1hour= x

Cross multiply;

7*X = 56*1

7X=56

Divide through by 7

X=56/7

X=8

Recall X= hourly rate

So cary’s unit rate for babysitting is $8

Part B;

Let cary’s earning for 55hours be $y

Recall

1hour =$8

55hours =y

Cross multiply

1*y= 8*55

Y= 440

Therefore in 55hours, Cary would earn $440.

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