Question
Danny & Elli together complete work ‘p’ in (z –
(67/52)) days, while Danny & Finn together can complete the work ‘q’ in ‘z’ days. If work ‘Q’ is 20% more than ‘p’, then in how many days Elli can finished the work ‘Q’? The ratio of number of days taken by Arjun and Bheem to complete a work individually is 7:8 and the ratio of number of days taken by Bheem and Chinky to complete a work individually is 6:7 and the ratio of number of days taken by Chinky, Danny, Elli and Finn to complete a work individually is 28 : 30 : 35 : 40. Arjun takes 21 days to complete a work individually.Solution
ATQ, we can say that (28 + 24) × ((z – 67)/52) × 1.2 = (28 + 21) × z 52 × 1.2 × ((z – 67)/52) = 49z 62.4z – 80.4 = 49z 13.4z = 80.4 z = 6 Elli complete work Q in = (28 + 21) × (6/24) = 49/4 = 12.25 days
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