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Raj, Shyam and Tarun can together make 8 dosas in 1 min. They have to make a total of 80 dosas. Raj started making dosas and after some time, Shyam and Tarun took over and completed the job. If it took a total of 20 minutes to complete the job and Raj made at least 5 dosas per minute, for how long did Raj work alone?

Raj, Shyam and Tarun can together make 8 dosas in 1 min. They have to make a total of 80 dosas. Raj started making dosas and after some time, Shyam and Tarun took over and completed the job. If it took a total of 20 minutes to complete the job and Raj made at least 5 dosas per minute, for how long did Raj work alone? Correct Answer 10 min

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