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The fourth grade classes are selling candy bars for a fundraiser. Ms. Metcalfe's class sold 36 bars, which is 4 times as many bars as Ms. Nigro's class sold. Which equation represents the numbers of bars, b, Ms. Nigro's class sold?
a. 36=4xb
b. b=4x36
c. a =24+3
What is a. 36=4xb?