## Chetan Mna is teaching live on Unacademy Plus

CRASH COURSE QUANTITATIVE APTITUDE ARITHMETIC) PRESENTED BY CHETAN

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ABOUT ME Mechanical Engineering. (NIT SURAT) Cleared SSC CGL main 2016, GATE 2015 Cleared Various Written Exams: CHSL Pre 2016 (146.5), IBPS PO 2015 (intervie SBI PO MAINS (2015), RRB MAINS 90+, SSC JEN.,DMRC, Sse. secunderabad (2015 Follow me on Unacademy at Course fee Contribute(OPTIONAL) If u like my course-please Rate,Review, Recomend https://unacademy.com/user/DAMON SO5

Q1. A completes7/10ofa work in 1 5 days. He completes the remaining work with the help of B in 4 days. The time required for A and B together to complete the entire work is: Q2. A man, a woman and a boy can together complete a piece of work in 3 days. If a man alone can do it in 6 days and a boy alone can do it in 18 days, how long will a woman alone take to complete the work? Q3. A and B can do a piece of work in 10 days, B and C in 15 days and A and C in 20 days. C alone can do the work in: Q4. A does half as much work as B in 1/6 of the time. If together they take 10 days to complete a work, how many days shall B take to do it alone? Q5. A can do a piece of work in 4 hours, B and C can do it in 3 hours; A and C can do it in 2 hours. How long will B alone take to do it? Q6. A does 4/5 of a piece of work in 20 days; he then calls in B and they finish the remaining work in 3 days. How long will B alone take to do the whole work? Q7. A can finish a work in 18 days and B can do the same work in half the time taken by A. Then, working together what part of the same work can they finish in a day?

Q8. A and B can finish a piece(f 30 days, B and C can finish it in 15 days while C and A can finish it in 10 days. Time taken by them together to do this work is Q9. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in: Q10. A and B can together finish a work in 30 days. They worked together for 20 days and then B left. After another 20 days A finished the remaining work. In how many days can A alone finish the job? Q11. If 72 men can build a wall 280m long in 21 days, how many men will take 18 days to build a similar type of wall of length 100 m? Q12. Babu and Asha can do a job together in 7 days. Asha is 7/4 times as efficient as Babu. The same job can be done by Asha alone in: Q13. If 3 men or 4 women can plough a field in 43 days, how long will 7 men and 5 women take to plough it? Q14. A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work is done by A in: Q15. If 6 persons working 8 hours a day earn Rs. 8400 per week, then 9 persons working 6 hours a day will earn per week: Answer (140/3 days (2) 9 days (3) 120days (4) 40 days (5) 12days (6) 37.5 day (7) 1/6 day (8) 10 day (9)6 day (10)60 days (11) 30 men (12) 11 days (13) 12 days (14) 10 days (15) 94

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