If three friends a, b and c can complete a work in 10 , 8 and 2 days respectively. Find in how many days they can together finish the work together?
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Step-by-step explanation:
LCM of 10, 8, and 2=40
let total work = 40
work of one day
A= 4, B= 5, and C = 20
work done in 1day by them= 29
hence required time= 40/29 days
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