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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
In an examination A got 25% marks more than B, B got 10% less than C and C got 25% more than D. If D got 320 marks out of 500, what were the marks obtained by A?
Correct
Correct Answer: D) 450
Solution:
Marks obtained by D = 320
Marks obtained by C = 320 X (125/100) = 400
Marks obtained by A = 320 X (125/100) = 450
Hence, required marks obtained by A = 450Incorrect
Correct Answer: D) 450
Solution:
Marks obtained by D = 320
Marks obtained by C = 320 X (125/100) = 400
Marks obtained by A = 320 X (125/100) = 450
Hence, required marks obtained by A = 450 -
Question 2 of 5
2. Question
Two years ago, the average age of Arun, Bala & Chitra was 30 years. The present average age of Arun & Bala is 25 years. 4 years hence, the average age of Chitra & Dinesh would be 43 years. What is the present age of Dinesh?
Correct
Correct Answer: A) 32 years
Solution:
2 years ago, total age of Arun + Bala + Chitra =90
their present age =90+6=96
So age of Chitra = 96-50=46
4 years hence, the total age of Chitra & Dinesh would be =86 years
So present age of Chitra & Dinesh =86-8=78
So present age of Dinesh = 78-46=32Incorrect
Correct Answer: A) 32 years
Solution:
2 years ago, total age of Arun + Bala + Chitra =90
their present age =90+6=96
So age of Chitra = 96-50=46
4 years hence, the total age of Chitra & Dinesh would be =86 years
So present age of Chitra & Dinesh =86-8=78
So present age of Dinesh = 78-46=32 -
Question 3 of 5
3. Question
While selling a watch, a shopkeeper gives a discount of 15%. If he gives a discount of 20%, he earns Rs 51 less as profit. What is the original price of the watch?
Correct
Answer: D) 1020 RS
Explanation:
Let the marked price be Rs.x
x * (100-15)/100 – x * (100-20)/100 = 51
x * 85/100 – x* 80/100 = 51
x * [5/100] = 51
x = Rs.1020
Incorrect
Answer: D) 1020 RS
Explanation:
Let the marked price be Rs.x
x * (100-15)/100 – x * (100-20)/100 = 51
x * 85/100 – x* 80/100 = 51
x * [5/100] = 51
x = Rs.1020
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Question 4 of 5
4. Question
In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with remaining meal?
Correct
Answer: B) 30
Explanation:
There is a meal for 200 children. 150 children have taken the meal.
Remaining meal is to be catered to 50 children.
Now, 200 children = 120 men.
50 children = (120/200 * 50) = 30 men.
Incorrect
Answer: B) 30
Explanation:
There is a meal for 200 children. 150 children have taken the meal.
Remaining meal is to be catered to 50 children.
Now, 200 children = 120 men.
50 children = (120/200 * 50) = 30 men.
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Question 5 of 5
5. Question
Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?
Correct
Answer: D) 14 min 40 sec
Explanation:
Part filled in 4 minutes = 4(1/15 + 1/20) = 7/15.
Remaining part = (1 – 7/15) = 8/15.
Part filled by B in 1 minute =1/20
1/20: 8/15:: 1: x
x= 10 2/3 = 10 min 40 sec.
Total time taken = 4 + 10 min 40 sec = 14 min 40 sec.
Incorrect
Answer: D) 14 min 40 sec
Explanation:
Part filled in 4 minutes = 4(1/15 + 1/20) = 7/15.
Remaining part = (1 – 7/15) = 8/15.
Part filled by B in 1 minute =1/20
1/20: 8/15:: 1: x
x= 10 2/3 = 10 min 40 sec.
Total time taken = 4 + 10 min 40 sec = 14 min 40 sec.
