Rimi and Tomy can do a piece of work in 45 and 40 days respectively. They began the work together, but Rimi leaves after some days and Tomy finished the remaining work in 23 days. After how many days did Rimi leave?
A
7 days
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B
8 days
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C
9 days
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D
11 days
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Solution
The correct option is C 9 days Let ‘n’ be the number of days for which they worked together.
Then, n ×(145)+(140)+(2340)=1
Solving, n = 9 days.