A ,B and C can do a piece of work in 8 days 12 days and 15 days days respectively .how long will they take to finish it if they work together.
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Answered by
21
A' s 1 day work = 1/10
Bs 1day work = 1/12
Cs 1 day work = 1/15
in 1 day they together does = 1/10 + 1/12 +1/15
10×12+12×15+15×10
=_____________________
10×12×15
=450/1800
=1/4 hence they can do the work in 4 days
Answered by
8
Step-by-step explanation:
A can do the work =1/8days
B can do the work=1/12days
C can do the work =1/15days
Time taken to finish the work=/1/8+1/12+1/15=33/120days
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