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15-11-2018
Mathematics

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Jim adds 20 to it, then doubles it and gets an answer of 99.2. What was the original number?

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wegnerkolmp2741o wegnerkolmp2741o

15-11-2018

(n+20)*2 = 99.2

distribute

2n + 40 = 99.2

subtract 40 from each side

2n = 59.2

divide each side by 2

n = 29.6

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