A and B can do a piece of work in 6days and 4days respectively. A Started the work at it for 2day and then was joined by B. find the total time taken to complete the work.
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Answer:
i think its 3.6
Step-by-step explanation:
let work=1
work done by A per day=1/6
simlrly for B its=1/4
if x is the total days to finish work then A does it all x days...while B only x-2 days
so 1=x/6. +(x-2)/4
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