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 Class 8 mathematics questions and answers on indirect proportion

Eighteen people can take 72 days to complete a piece of work. If 2 of the people did not turn up for the work,how many more days would the remaining number of people, working at the same rate, take to complete the work?
A. 9
B. 81
C. 153
D. 575

 (3m 14s)
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