3 years ago

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

Mathematics

1 answer:

riadik2000 [5.3K]3 years ago

7 0

(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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