chandan can do a piece of work in 30 days and harsh can do it in 45 days in how many days will chandan and Harsh do it together?
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A can do a piece of work in 45 days. In other words in 1 day A can perform 1/45 part of work
B can do a piece of work in 30 days. In other words in 1 day B can perform 1/30 part of work.
When A and B work together, The part of work completed in 1 day is equal to 1/45 + 1/30 = 1/18 .
So in order to complete the work it has to perform 18 times this part. That will take 1day*18 = 18days.
so, ans is= 18 days
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Answer:
Step-by-step explanation:
Mean value = 30+45 = 75.
Total man days 30x45 =1350
To finish in 25 days 1350/25=54
More men 54–30=24.
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