A can do a work in 12 days and B can do it in 18 days. They started working together, but A leaves 3 days before the work gets over. For how many days did the two work together?
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Answered by
0
Answer:
9 days
Step-by-step explanation:
A can do work in 12 days, but leaves 3 days early. 12-3=9. Day 1 together. Day 2 together. Day 3 together. Day 4 together. Day 5 together. Day 6 together. Day 7 together. Day 8 together. Day 9 together.
Answered by
3
Total work to be done is LCM(12,18)=36 parts
A does 36 part in 12 days so 3parts/day
Similarly B does 2 parts/day
Together A and B do 5 parts/day
In two days they do 5x2= 10 parts of work
Now work left is 36–10= 26 parts
This will be completed by B in 26 parts/2 part/day=13 days
So, this is your answer.
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