How did they get 2n + 10 here? Daniel can encode a paper in 5 hours and together he and Dennis can encode it in 2 hours, how long would it take Dennis to encode the same paper alone? If Daniel can encode a paper in 5 hours, then he encodes 15th paper per hour. Let n be the time it takes Dennis to encode a paper. 1/5+1/n=1/2 2n+10=5n 10=3n n=10/3 n=3 1/3

Lorena Lester 2022-07-16 Answered
How did they get 2n + 10 here?
Daniel can encode a paper in 5 hours and together he and Dennis can encode it in 2 hours, how long would it take Dennis to encode the same paper alone?
1 5 + 1 n = 1 2
2 n + 10 = 5 n
10 = 3 n
n = 10 3
n = 3 1 3
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Answers (1)

cindysnifflesuz
Answered 2022-07-17 Author has 19 answers
They simply used ::
1 5 + 1 n = 1 2
5 + n 5 n = 1 2
(basics of fraction addition) 10 + 2 n = 5 n
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