kuldeep can finish typing of a certain document in 12 days . Ranjeet in 10 days, and Komal in 15 days. how long will they take to type that document, if they work together ?
step by step explanations please
right answer according to the answer sheet is 4 days.
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Step-by-step explanation:
=1/12+1/10+1/15
=(5+6+4)/60
=15/60
together do a piece of work in 1day =1/4
1 divided by 1/4
Answer= 4 days
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