25 persons can complete a piece of work in 60 days. They started the work . 10 persons left the work after x days. If the whole work was completed in 80 days , then what is the value of x ?
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Answer:
20 days
Step-by-step explanation:
given,
25 persons can complete a piece of work in 60 days
i.e. 25:60
10 persons left the work
i.e. 25 persons - 10 persons
= 15 persons
the no. of days the 10 persons worked is x days
the work completes by 15 persons in 80 days
i.e. 15: 80
x days = number of days work done by 15 person - number of days work done by 25 person
= 80 days - 60 days
= 20 days
therefore, the 10 persons left the work after 20 days
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