A can write 75 pages in 25 hours and b together can write 135 pages in 27 hours in what time can b write 42 pages
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Answer:
21 hours
Step-by-step explanation:
A can write75 pagers in 25 hours
therefore for 1hr he will write 3 pages
A+B=135 pages in 27 hrs
A can write 81pages(3*27) in 27 hrs
therefore B in 27 hrs=135-81=54
therefore B can write 2 pages in 1hr.
for 42 pages therefore he would take 21 hrs
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