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Question Number 63812 by kaivan.ahmadi last updated on 09/Jul/19

A c a n t e r m i n a t e a w o r k 9 h o u r e a r l i e r

t h a n B .

A a n d B t e r m i n a t e t h a t w o r k a f t e r 20 h o u r t o g e t h e r .

A c a n t e r m i n a t e t h a t w o r k a f t e r \dots . h o u r .

Commented by kaivan.ahmadi last updated on 09/Jul/19

i f o u n d a w a y a n d i w a n t a n o t h e r w a y .

\frac{1}{x} + \frac{1}{x + 9} = \frac{1}{20} \Rightarrow x = 36

Commented by MJS last updated on 09/Jul/19

{there}^{'} s no other way

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