A and B start working together, after some days A left the work and the whole work completed in 9days.Find after how many days did A left, if A and B completes the work in 10 &15 days respectively.
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Answer:
After 4 days
Step-by-step explanation:
A=10 days
B=15 days
suppose work will be 60 units A can do 6units /day
B can do it 4 units /day
A will leave some days but B will do it entire work was done so he work for 9 days.
B can do 4 units/day for 9 days he can do 36 units
so the remaining work will be done by A.
Remaining work 60-36=24
A can do it 6 units per day, for 24 units he will take 4 Days
so A left the work after 4 days.
Hope you understand
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