Q.20. 40 persons take 30 days to complete a work. How long will it take to complete the work, if 20 more persons join them?
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Answer:
the correct answer is 15 days
Step-by-step explanation:
time taken by 40 people = 30 days
time taken by 1 person = 30/40
if more 20 people join then = 30 ×20/40
ur answer is 15
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