[Mission 2022] Insta–DART (Daily Aptitude and Reasoning Test) 17 November 2021

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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

Amixture contains milk and water in the ratio 5: 1. On adding 5 litres of water, the ratio of milk to water becomes 5: 2. The quantity of milk in the mixture is

Correct

Ans. (b)

Let milk and water are 5x 😡

Now, (5x/(x+5)= 5/2 ⇒10x= 5x +25

5x = 25, x = 5

milk: water = 25: 10

Incorrect

Ans. (b)

Let milk and water are 5x 😡

Now, (5x/(x+5)= 5/2 ⇒10x= 5x +25

5x = 25, x = 5

milk: water = 25: 10

Question 2 of 5

2. Question

Vijay has coins of the denomination of Re. 1, 50p and 25 p in the ratio of 12 10: 7. The total worth of the coins he has is Rs. 75, Find the number of 25 p coins that Vijay has

Correct

Ans. (d)

Coins are 12x: 10x: 7x

It is given that 12x+ 10x x (1/2)+(7/4)x = 75

48x+ 20x + 7x/(4) = 75

75x=4 ´75, x =4

Incorrect

Ans. (d)

Coins are 12x: 10x: 7x

It is given that 12x+ 10x x (1/2)+(7/4)x = 75

48x+ 20x + 7x/(4) = 75

75x=4 ´75, x =4

Question 3 of 5

3. Question

If two numbers are in the ratio of 5: 8 and if 9 be added to each the ratio becomes 8:11, Now find the lower number.

Correct

Ans. (c)

Let number are 5x and 8x then it is given that

(5x+9)/(8x+9) = 8/11

55r +99= 64x +72

27= 9x, x =3

Number are 15 and 24

Incorrect

Ans. (c)

Let number are 5x and 8x then it is given that

(5x+9)/(8x+9) = 8/11

55r +99= 64x +72

27= 9x, x =3

Number are 15 and 24

Question 4 of 5

4. Question

If x varies as y, and y is 7 when x=18, find x when y=21

Correct

Ans.(b)

x is directly proportional to y

So x = k.y

18 = 7k

K = 18/7

Now, x = (18/7)x21= 54

Incorrect

Ans.(b)

x is directly proportional to y

So x = k.y

18 = 7k

K = 18/7

Now, x = (18/7)x21= 54

Question 5 of 5

5. Question

A varies jointly as B and C; and A = 6 when B= 3, C= 2; find A when B = 5, C = 7.

Correct

Ans. (b)

Let A = k(BC) then

6 = k(3.2)

So, k=1 then

A= k(BC)

= 1x(5×7) = 35

Incorrect

Ans. (b)

Let A = k(BC) then

6 = k(3.2)

So, k=1 then

A= k(BC)

= 1x(5×7) = 35

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