Subhash can copy 50 pages in 10 hours; Subhash and Prakash together can copy 300 pages in 40 hours. In how much time can Prakash copy 30 pages?

Ashutosh Nautiyal

Subhash can copy 50 pages in 10 hours; Subhash and Prakash together can copy 300 pages in 40 hours. In how much time can Prakash copy 30 pages?

  • A. 13 h
  • B. 12 h
  • C. 11 h
  • D. 9 h
 

The correct answer is option B. 12 h. Can you explain this answer in the comments?


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Subhash can copy 50 pages in 10 hours; Subhash and Prakash together can copy 300 pages in 40 hours. In how much time can Prakash copy 30 pages?




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