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If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A and B together can complete a task in 40 days. B and C together can complete the same task in 50 days. A and C together can complete the same task in 60 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?
A and B together can complete a task in 20 days. B and C together can complete the same task in 25 days. A and C together can complete the same task in 30 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?
In a press there are three types of printing machines A, B, and C. Machine A can print ten thousand pages in 8 hours, machine B can do the same task in 10 hours, and machine C can do the same task in 12 hours. All three machines start the task at 9∶00 a.m. Machine A breaks down at 11∶00 a.m. and machines B and C continue working. At 12∶00 noon machine B also breaks down and machine C alone has to complete the remaining task. What is the approximate time of completion of the task?
In this question, the statement has shown the relationship of various elements. Statement after the two findings:   Statement: A ≤ B < C ≥ D < E = F < G conclusions: i) A = D                      ii) A < D Select one of the following options A) Only conclusion i is logical B) Only conclusion ii is logical C) Either I or ii is logical D) Neither I nor ii are logical (E) Both I and ii are logical.
Consider two binary operators ‘↑’ and ‘↓’ with the precedence of operator ↓ being lower than that of the operator ↑. Operator ↑ is right associative while operator ↓ is left associative. Which one of the following represents the parse tree for expression (7↓3↑4↑3↓2)?
Consider two binary operators ‘↑’ and ‘↓’ with the precedence of operator ↓being lower than that of the operator ↑. Operator ↑ is right associative while operator ↓ is left associative. Which one of the following represents the parse tree for expression (7 ↓ 3 ↑ 4 ↑ 3 ↓ 2)?
A can complete 25% of a task in 10 days. B can complete 40% of the task in 40 days and C can complete \(\frac{1}{3}\) of the task in 13 days. Who among them has the fastest speed to complete the same task?
Ravi and Kamal together can complete a task in 60 days, they start work together and after 46 days Kamal left the task and whole task completes in 66 days. Find the days in which Kamal alone can complete 60% of whole task? 
X did a task for 24 days and left in incomplete. He could have finished the task all by himself in a total of 36 days. Y, who can finish the task alone in 18 days, will take how many more days to complete the task?