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
Apurva can do a piece of work in 12 days. Apurva and Amit complete the work together and were paid Rs. 54 and Rs. 81 respectively. How many days must they have taken to complete the work together?
Correct
Answer: c
Since the ratio of money given to Apurva and Amit is 2:3, their work done would also be in the same ratio. Thus, their time ratio would be 3:2 (inverse of 2:3). So, if Apurva takes 12 days, Amith would take 8 days and total number of days required(t) would be given by the equation:
(1/12+ 1/8)=1 →1= 24/5 = 4.8 days
Incorrect
Answer: c
Since the ratio of money given to Apurva and Amit is 2:3, their work done would also be in the same ratio. Thus, their time ratio would be 3:2 (inverse of 2:3). So, if Apurva takes 12 days, Amith would take 8 days and total number of days required(t) would be given by the equation:
(1/12+ 1/8)=1 →1= 24/5 = 4.8 days
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Question 2 of 5
2. Question
Raju is twice as good as Vijay. Together, they finish the work in 14 days. In how many days can Vijay alone do the same work?
Correct
Answer : d
Raju being twice as good a workman as Vijay, You can solve the following equation to get the
Required answer:
1/R + 1/2R = 1/14.
Solving will give you that Vijay takes 42 days.
Incorrect
Answer : d
Raju being twice as good a workman as Vijay, You can solve the following equation to get the
Required answer:
1/R + 1/2R = 1/14.
Solving will give you that Vijay takes 42 days.
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Question 3 of 5
3. Question
In a company XYZ Ltd. a certain number of engineers can develop a design in 40 days. If there were 5 more engineers, it could be finished in 10 days less. How many engineers were there in the beginning?
Correct
Answer: d
40n = 30 (n + 5) → n = 15
Incorrect
Answer: d
40n = 30 (n + 5) → n = 15
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Question 4 of 5
4. Question
If 12 men and 16 boys can do a piece of work in 5 days and 13 men and 24 boys can do it in 4 days, compare the daily work done by a man with that done by a boy?
Correct
Answer : c
12 x 5 man days + 16 x 5 Boy days
= 13 x 4 man days +24 x 4 Boy days
8 man days = 16 Boy days
1 man day = 2 Boy days.
Required ratio of man’s work to boy’s work = 2: 1
Incorrect
Answer : c
12 x 5 man days + 16 x 5 Boy days
= 13 x 4 man days +24 x 4 Boy days
8 man days = 16 Boy days
1 man day = 2 Boy days.
Required ratio of man’s work to boy’s work = 2: 1
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Question 5 of 5
5. Question
A can do a work in 10 days and B can do the same work in 20 days. They work together for 5 days. And then A goes away. In how many more days will days will B finish the work?
Correct
Answer : a
A’s rate of working is 10 per cent per day while B’s rate of working is 5 per cent per day. In 5 days they will complete 75 per cent work. Thus the last 25 per cent would be done by B alone. Working the rate of 5 per cent per day, B would do the work in 5 days.
Incorrect
Answer : a
A’s rate of working is 10 per cent per day while B’s rate of working is 5 per cent per day. In 5 days they will complete 75 per cent work. Thus the last 25 per cent would be done by B alone. Working the rate of 5 per cent per day, B would do the work in 5 days.
