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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
How many kilograms of sugar worth 3.60 per kg Should be mixed with 8 kg of sugar worth Rs. 4.20 per kg, such that by selling the mixture at Rs. 4.40 per kg, there may be a gain of 10%?
Correct
Ans-d
Since by selling at Rs. 4.40 we want a profit of 10%, it means that the average cost required is RS. 4 per kg. Mixing sugar worth Rs. 3.6/kg and Rs. 4.2/kg to get 4/kg means a mixture ratio of 1:2. Thus, to 8 kg of the second variety we need to add 4 kg of the first variety to get the required cost price.
Incorrect
Ans-d
Since by selling at Rs. 4.40 we want a profit of 10%, it means that the average cost required is RS. 4 per kg. Mixing sugar worth Rs. 3.6/kg and Rs. 4.2/kg to get 4/kg means a mixture ratio of 1:2. Thus, to 8 kg of the second variety we need to add 4 kg of the first variety to get the required cost price.
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Question 2 of 5
2. Question
400 students took a mock exam in Delhi. 60% of the boys and 80% of the girls cleared the cut off in the examination. If the total percentage of students qualifying is 65%, how many girls appeared in the examination?
Correct
Ans-a
The ratio of boys and girls appearing for the exam can be seen to be 3:1 using the following alligation figure.
This means that out of 400 students, there must have been 100 girls who appeared in the exam.
Incorrect
Ans-a
The ratio of boys and girls appearing for the exam can be seen to be 3:1 using the following alligation figure.
This means that out of 400 students, there must have been 100 girls who appeared in the exam.
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Question 3 of 5
3. Question
The average salary per head of all employees of a company is Rs. 600. The average salary of 120 officers is Rs. 4000. If the average salary per head of the rest of the employees is560, find the total number of workers in the company.
Correct
Ans-b
From the figure it is clear that the ratio of the number of officers to the number of other employees would be 40:3400. Since there are 120 officers, there would be 3400 x 3 = 10200 workers in the company. Thus the total number of employees would be 10200 +120 = 10320.
Incorrect
Ans-b
From the figure it is clear that the ratio of the number of officers to the number of other employees would be 40:3400. Since there are 120 officers, there would be 3400 x 3 = 10200 workers in the company. Thus the total number of employees would be 10200 +120 = 10320.
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Question 4 of 5
4. Question
A container has a capacity of 20 gallons and is full of spirit. 4 gallons of spirit is drawn out and the container is again filed with water. This process is repeated 5 times. Find out how much spirit is left in the resulting mixture finally?
Correct
Ans-b
The amount of spirit left= 20 x 4/5 x 4/5 x 4/5 x 4/5 x 4/5 = 4096/625 = 6 (346/625).
Incorrect
Ans-b
The amount of spirit left= 20 x 4/5 x 4/5 x 4/5 x 4/5 x 4/5 = 4096/625 = 6 (346/625).
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Question 5 of 5
5. Question
The average age of 80 students of IIM, Bangalore of the 1995 batch is 22 years. What will be the new average if we include the 20 faculty members whose average age is 37 years?
Correct
Ans-c
(80 x 22 + 20 x 37 ) /100 = 2500/100 = 25
Incorrect
Ans-c
(80 x 22 + 20 x 37 ) /100 = 2500/100 = 25
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