(A) 32 days
(B) 40 days
(C) 30 days
(D) 42 days
(E) none of these
Answer: C: 30 days
2) A can do a piece of work in 15 days , while B alone can do it in 20 days. They work together for 6 days and rest of the work is done by C in 6 days. If they get Rs 800 for the whole work, how should they divide the money?
Source: safalta
(A) Rs 320, Rs 240 and Rs 240
(B) Rs 640, Rs 280 and Rs 260
(C) Rs 320, Rs 4200 and Rs 360
(D) Rs 360, Rs 420 and Rs 240
(E) Rs 320, Rs 240 and Rs 720
Answer: A: Rs 320, Rs 240 and Rs 240
3) Anil, Bala and Shiv together can complete the work in 32 days and Shiv alone complete the work in 40 days. If Anil, Bala and Shiv started the work together and after 20 days Anil and Bala left the work, in how many days Shiv alone complete the remaining work?
(A) 12 days
(B) 15 days
(C) 18 days
(D) 20 days
(E) 24 days
Answer: 2: 15 days
4) ‘x’ boys can complete a work in 16 days and ‘y’ girls can complete the same work in 20 days. Find the number of days taken to complete the work by (x – 3) boys and (y – 5) girls together. Statement 1: If the efficiency of boys is twice than that of girls and (x + y) = 26. Statement 2: If x = y, then the number of days taken by all the girls is half the number of days taken by all the boys.
(A) Statement 1 is sufficient to answer
(B) Statement 2 is sufficient to answer
(C) Both the statements are required to answer
(D) Any one of the two statements is sufficient to answer
(E) Both statements are not sufficient to answer
Answer: A: Statement 1 is sufficient to answer
5) So, Statement I alone is sufficient to answer the question Four persons P,Q,R and S are hired to do work. P, R and S can complete the task in 20 days while working together. Find the number of days taken by Q alone to complete the task. Statement 1: R and S can complete the task in 24 days, Q is 200% more efficient than P. Statement 2: P alone can complete the work in 36 days and ratio of efficiency of R and S is 2:3 resp.
(A) Statement 1 is sufficient to answer
(B) Statement 2 is sufficient to answer
(C) Both the statements are required to answer
(D) Any one of the two statements is sufficient to answer
(E) Both statements are not sufficient to answer
Answer: A: Statement 1 is sufficient to answer
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6) A & B can do a piece of work in 60, 70 days respectively and worked for (x+2), (x+13) days. If 10% of the work is pending which is completed by C, if D takes (x+6) to complete the work then find the time taken by D to complete the work.
(A) 30 days
(B) 20 days
(C) 24 days
(D) 28 days
(E) none of these
Answer: D: 28 days
7) Ramesh takes thrice the time taken by Suresh to complete a piece of work and 60% less than the time taken by Manish to complete the work. If all of them working together can complete the work in 120 /13 days than in ____ days Ramesh , ______ days Suresh and ______ days Manish can complete that work individually?
(A) 15 days12 days, 15 days,
(B) 12 days, 15 days, 30 days
(C) 8 days , 24 days , 40 days
(D) 6 days, 12 days, 15 days
(E) None of these
Answer: C: 8 days , 24 days , 40 days
8) A and B together can complete a work in 30 days. They started together but after 6 days A left the work and the work is completed by B after 36 more days. A alone can complete the entire work in how many days?
(A) 45
(B) 90
(C) 60
(D) 120
(E) 45 1/2
Answer: B: 90
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9) A and B together can complete a work in 10 days. They started together but A left after 2 days and the remaining work was completed by B in 12 days. In how many days can A complete the entire work while working alone?
(A) 15
(B) 20
(C) 30
(D) 45
(E) 120
Answer: C: 30
10) A and B have to type of a book together containing 120 pages. A takes 9 hours to type 36 pages and B takes 5 hours to type 40 pages. A typed first 60 pages and the last 60 pages were typed by A and B together. How much time (in hours) will be taken to type the complete book?
(A) 24
(B) 20
(C) 12
(D) 15
(E) 45
Answer: B: 20