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550 people can complete a work in 100days.After 10 days start of the work 50 more people join.In how many more days now the work will completed |
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Answer» 550 people can do the work in 100 days ⇒ 1 day = 1/100 of the work Amount of work completed by 550 people in 10 days: 1 day = 1/100 10days = 1/100 x 10 = 10/100 = 1/10 of the work Amount of work left to do after the 10 days: Amount of work left = 1 - 1/10 = 9/10 of the work ------------------------------------------------------------------------ Number of people after 50 joined in: 550 + 50 = 600 people Find the number of days needed for 600 people to complete the work: 550 people = 100 days 1 PERSON = 100 x 550 = 55000 days 600 people = 55000 ÷ 600 = 275/3 days Find the number of days needed to complete the rest of the work: Rest of the work = 9/10 of the work whole work = 275/3 days 9/10 of the work = 9/10 x 275/3 = 82.5 days Answer: They need ANOTHER 82.5 days |
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