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
4 men and 3 women finish a job in 6 days, and 5 men and 7 women can do the same job in 4 days How long will 1 man and 1 woman take to do the work?
Correct
Answer : a
24 man days + 18 women days = 20 man days + 28 woman days
→ 4 man days = 10 woman days.
→ l man day = 2.5 woman days
Total work = 24 man days + 18 woman days = 60
woman days + 18 woman days= 78 woman days.
Hence, 1 man + 1 woman= 3.5 women can do it
in 78/3.5 = 156/7 = 22(2/7) days.
Incorrect
Answer : a
24 man days + 18 women days = 20 man days + 28 woman days
→ 4 man days = 10 woman days.
→ l man day = 2.5 woman days
Total work = 24 man days + 18 woman days = 60
woman days + 18 woman days= 78 woman days.
Hence, 1 man + 1 woman= 3.5 women can do it
in 78/3.5 = 156/7 = 22(2/7) days.
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Question 2 of 5
2. Question
1f 8 boys and 12 women can do a piece of work in ten 25 days, in how many days can the work be done by 6 boys and 11 women working together?
Correct
Answer : D
The data is insufficient, since we only know that the work gets completed in 200 boy days and 300 women days.
Incorrect
Answer : D
The data is insufficient, since we only know that the work gets completed in 200 boy days and 300 women days.
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Question 3 of 5
3. Question
A can do a piece of work in 10 days and B can do the same work in 20 days. With the help of C, they finish the work in 5 days. How long will it take for C alone to finish the work?
Correct
Answer : a
A = 10%, B = 5% and Combined work is 20%
Hence, C’s work is 5% and will require 20 days.
Incorrect
Answer : a
A = 10%, B = 5% and Combined work is 20%
Hence, C’s work is 5% and will require 20 days.
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Question 4 of 5
4. Question
A can do a piece of work in 20 days. He works at it for 5 days and then B finishes it in 10 more days. In how many days will A and B together finish the work?
Correct
Answer : a
In 5 days, A would do 25% of the work. Since, B finishes the remaining 75% work in 10 days, we can conclude that B’s work in a day= 7.5%
Thus, (4 t B) = 12.5% per day.
together they would take 100/12.5= 8 days.
Incorrect
Answer : a
In 5 days, A would do 25% of the work. Since, B finishes the remaining 75% work in 10 days, we can conclude that B’s work in a day= 7.5%
Thus, (4 t B) = 12.5% per day.
together they would take 100/12.5= 8 days.
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Question 5 of 5
5. Question
A and B undertake to do a piece of work for R 100. A can do it in 5 days and B can do it in 10 days. With the help of C, they finish it in 2 days. How much should C be paid for his contribution?
Correct
Answer : A
A =20%, B = 10% and A+ B+C= 50%. Hence,
C=20%. Thus, in two days, C contributes 40% of the total work and should be paid 40 % of the total amount.
Incorrect
Answer : A
A =20%, B = 10% and A+ B+C= 50%. Hence,
C=20%. Thus, in two days, C contributes 40% of the total work and should be paid 40 % of the total amount.
