Insta–DART (Daily Aptitude and Reasoning Test) 2020 - 21
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Considering the alarming importance of CSAT in UPSC CSE Prelims exam and with enormous requests we received recently, InsightsIAS has started Daily CSAT Test to ensure students practice CSAT Questions on a daily basis. Regular Practice would help one overcome the fear of CSAT too.
We are naming this initiative as Insta– DART – Daily Aptitude and Reasoning Test. We hope you will be able to use DART to hit bull’s eye in CSAT paper and comfortably score 100+ even in the most difficult question paper that UPSC can give you in CSP-2021. Your peace of mind after every step of this exam is very important for us.
Looking forward to your enthusiastic participation (both in sending us questions and solving them on daily basis on this portal).
Wish you all the best ! 🙂
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Question 1 of 5
1. Question
30 men working 5 h a day can do a work in 16 day In how many days Will 20 men working 6h a do the same work?
Correct
Answer : b
Work equivalence method:
30 x 5 x 16 = 20 x 6 Xn
Gives the value of n as 20 days
Incorrect
Answer : b
Work equivalence method:
30 x 5 x 16 = 20 x 6 Xn
Gives the value of n as 20 days
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Question 2 of 5
2. Question
Ajay and Vijay undertake to do a piece of work for Rs. 200. Ajay alone can do it in 24 days while vijay alone can do it in 30 days. With the help help of Pradeep they finish the work in 12 days. How much should Pradeep get for his work?
Correct
Answer: a
Ajay’s daily work = 4.1666%. Vijay’s daily work = 3.33% and the daily work of all the three together is 8.33%. Hence, Pradeep’s daily work will be 0.8333%. Hence, he will end up doing 10% of the total work in 12 days. This will mean that he will be paid Rs. 20.
Incorrect
Answer: a
Ajay’s daily work = 4.1666%. Vijay’s daily work = 3.33% and the daily work of all the three together is 8.33%. Hence, Pradeep’s daily work will be 0.8333%. Hence, he will end up doing 10% of the total work in 12 days. This will mean that he will be paid Rs. 20.
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Question 3 of 5
3. Question
15 men could finish a piece of work in 210 days. But at the end of 100 days, 15 additional men are employed In how many more days will the work be complete
Correct
Answer: c
Total work = 15 x 210= 3150 man days.
After 100 days, work done = 15 x 100 = 1500 man days
Work left = 3150 1500 1650 man days.
This work has to be done with 30 men working each day.
The number of days (more) required = 1650/30= 55 days
Incorrect
Answer: c
Total work = 15 x 210= 3150 man days.
After 100 days, work done = 15 x 100 = 1500 man days
Work left = 3150 1500 1650 man days.
This work has to be done with 30 men working each day.
The number of days (more) required = 1650/30= 55 days
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Question 4 of 5
4. Question
Ajay, Vijay and Sanjay are employed to do a piece of work for Rs. 529. Ajay and Vijay together are supposed to do 19/23 of the work and Vijay and Sanjay together 8/23 of the work. How much should Ajay be paid?
Correct
Answer : D
A+V+S = 1
A+V= 19/23 ………………..(1)
V+S = 8/23
A+ 2V + S=27/23 …………(2)
(2) – (1) gives us : V = 4/23
Incorrect
Answer : D
A+V+S = 1
A+V= 19/23 ………………..(1)
V+S = 8/23
A+ 2V + S=27/23 …………(2)
(2) – (1) gives us : V = 4/23
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Question 5 of 5
5. Question
Anmol is thrice as good a workman as Vinay and therefore is able to finish the job in 60 days less than Vinay. In how many days will they finish the job working together?
Correct
Answer : a
Interpret the starting statement as: Anmol takes 30 days and Vinay takes 90 days. Hence, the answer
will be got by:
(1/30 + 1/90)* n=1
Alternatively, you can also solve using percentages
as: 3.33 +1.11 = 4.44% is the daily work. Hence,
the no. of days required is 100/4.44 = 22.5 days.
Incorrect
Answer : a
Interpret the starting statement as: Anmol takes 30 days and Vinay takes 90 days. Hence, the answer
will be got by:
(1/30 + 1/90)* n=1
Alternatively, you can also solve using percentages
as: 3.33 +1.11 = 4.44% is the daily work. Hence,
the no. of days required is 100/4.44 = 22.5 days.
