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
Hans and Bhaskar have salaries that jointly amount to 10,000 per month. They spend the same amount monthly and then it is found that the ratio of their savings is 6 : 1. Which of the following can be Hans’s salary?
Correct
Answer : a
The only logic for this question is that Hans’ salary would be more than Bhaskar’s salary. Thus, only option (a) is possible for Hans’ salary.
Incorrect
Answer : a
The only logic for this question is that Hans’ salary would be more than Bhaskar’s salary. Thus, only option (a) is possible for Hans’ salary.
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Question 2 of 5
2. Question
The population of a village is 5500. If the number of males increases by 11% and the number of females increases by 20%, then the population becomes 6330. Find the population of females in the town.
Correct
Answer : a
By using options, you can easily see that option (a) satisfies.
2500 females means 3000 males.
Increase = 2500 x 0.2 + 3000 x 0.11 = 830
Incorrect
Answer : a
By using options, you can easily see that option (a) satisfies.
2500 females means 3000 males.
Increase = 2500 x 0.2 + 3000 x 0.11 = 830
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Question 3 of 5
3. Question
Vicky’s salary is 75% more than Ashu’s. Vicky got a raise of 40% on his salary while Ashu got a raise of 25% on his salary. By what percent is Vicky’s salary more than Ashu’s?
Correct
Answer : a
If Ashu’s salary =100, then Vicky’s salary = 175.
Ashu’s new salary 125, Vicky’s new salary = 175 x 1.4 = 245. Percentage difference between Vicky’s salary and Ashu’s salary now = 120 x 100/125 = 96%.
Incorrect
Answer : a
If Ashu’s salary =100, then Vicky’s salary = 175.
Ashu’s new salary 125, Vicky’s new salary = 175 x 1.4 = 245. Percentage difference between Vicky’s salary and Ashu’s salary now = 120 x 100/125 = 96%.
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Question 4 of 5
4. Question
On a shelf, the first row contains 25% more books than the second row and the third row contains 25% less books than the second row, if the total number of books contained in all the rows is 600, then find the number of books in the first row.
Correct
Answer : a
Let the second row contain 100 books. Then, the first row would contain 125 books and the third row would contain 75 books. The total number of books would be 100 + 125 + 75 = 300. But this number is given as 600 which means that the total number of books would be double the assumed value for each row. Thus, the first row would contain 125 x 2 = 250 books.
Incorrect
Answer : a
Let the second row contain 100 books. Then, the first row would contain 125 books and the third row would contain 75 books. The total number of books would be 100 + 125 + 75 = 300. But this number is given as 600 which means that the total number of books would be double the assumed value for each row. Thus, the first row would contain 125 x 2 = 250 books.
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Question 5 of 5
5. Question
An ore contains 25% of an alloy that has 90% iron. Other than this, in the remaining 75% of the ore, there is no iron. How many kilograms of the ore are needed to obtain 60 kg of pure iron?
Correct
Answer : d
Since the only iron contained in the ore is 90% of 25%, the net iron percentage would be 22.5%. Thus, 60 kg should be 22.5% of the ore 60/0.225 = 266.66
Incorrect
Answer : d
Since the only iron contained in the ore is 90% of 25%, the net iron percentage would be 22.5%. Thus, 60 kg should be 22.5% of the ore 60/0.225 = 266.66
