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
A person can do a piece of work in 26 days and an another person can do the same work in 39 days. If they work together, then by what per cent the wages of 1st person is more than that of 2nd person?
Correct
Answer: d
Let 1st person be x and 2nd person be y.
Then, x’s 1 day’s work= (1/26)
y’s 1 day’s work = (1/39)
x’s share: y’s share = (1/26):(1/39) = (3/78): (2/78) = 3:2
Difference of ratio = 3-2 =1
∴Required percentage = (1/2) ´ (100%) = 50%
∴1st person’s wages is 50% more than the 2nd person’s wages.
Incorrect
Answer: d
Let 1st person be x and 2nd person be y.
Then, x’s 1 day’s work= (1/26)
y’s 1 day’s work = (1/39)
x’s share: y’s share = (1/26):(1/39) = (3/78): (2/78) = 3:2
Difference of ratio = 3-2 =1
∴Required percentage = (1/2) ´ (100%) = 50%
∴1st person’s wages is 50% more than the 2nd person’s wages.
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Question 2 of 5
2. Question
A alone can finish a work in 2 days, while B alone can finish it in 3 days. If they work together to finish it, then out of total wages of 6000, what will be the 20% of A’s share?
Correct
Answer : a
As 1 day’s work =(1/2)
B’s 1 day’s work = (1/3)
A’s share B’s share = (1/2):1/3) = (3/6):( 2/6) = 3:2
A’s share = (3/5)*6000 = 3 *1200 = Rs 3600
∴20% of A’s share = 3600 *(20/100) = Rs. 720
Incorrect
Answer : a
As 1 day’s work =(1/2)
B’s 1 day’s work = (1/3)
A’s share B’s share = (1/2):1/3) = (3/6):( 2/6) = 3:2
A’s share = (3/5)*6000 = 3 *1200 = Rs 3600
∴20% of A’s share = 3600 *(20/100) = Rs. 720
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Question 3 of 5
3. Question
Vandana can do a piece of work in 10 days. With the help of Ruchi, she can do the same work in 6 days. If they get 200 for that work, then what will be the share of Ruchi in the received remuneration?
Correct
Answer : d
Vandana’s 1 day’s work = (1/3)
(Vandana + Ruchi)’s 1 day’s work = (1/6)
∴Ruchi’s 1 day’s work = (1/6)-(1/10) = [(10-6)/(6*10)] = (4/60)=(1/15)
∴Vandana’s share: Ruchi’s share = (1/10) : (1/15) = (3/30) : (2/30) = 3:2
Ruchi’s share = (2/5) ´200 = Rs. 80
Incorrect
Answer : d
Vandana’s 1 day’s work = (1/3)
(Vandana + Ruchi)’s 1 day’s work = (1/6)
∴Ruchi’s 1 day’s work = (1/6)-(1/10) = [(10-6)/(6*10)] = (4/60)=(1/15)
∴Vandana’s share: Ruchi’s share = (1/10) : (1/15) = (3/30) : (2/30) = 3:2
Ruchi’s share = (2/5) ´200 = Rs. 80
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Question 4 of 5
4. Question
A sum of money is sufficient to pay A’s wages for 21 day’s and B’s wages for 28 days. The same money is sufficient to pay the wages of both for
Correct
Answer : b
A’s 1 day’s work = (1/21)
B’s day’s work = (1/28)
∴Same money is sufficient to pay the wages of both for
Incorrect
Answer : b
A’s 1 day’s work = (1/21)
B’s day’s work = (1/28)
∴Same money is sufficient to pay the wages of both for
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Question 5 of 5
5. Question
Amit, Vipul and Kapil can do a piece of work in 12, 16 and 24 days, respectively. If they complete the work together and get an amount of R 2700, then what is the share of Vipul in that amount?
Correct
Answer : d
1 day s work of Amit = (1/12)
1 day’s Work of Vipul = (1/16)
1 day’s work of Kapil = (1/24)
Amit’s share : Vipul’s share Kapil’s shars : Kapil’s share = (1/12) : (1/16) : (1/24) = (4/48) : (3/48) : (2/48) = 4 : 3 : 2
Now, Vipul’s share = (3/9) * 2700
=3 * 300 = Rs. 900
Incorrect
Answer : d
1 day s work of Amit = (1/12)
1 day’s Work of Vipul = (1/16)
1 day’s work of Kapil = (1/24)
Amit’s share : Vipul’s share Kapil’s shars : Kapil’s share = (1/12) : (1/16) : (1/24) = (4/48) : (3/48) : (2/48) = 4 : 3 : 2
Now, Vipul’s share = (3/9) * 2700
=3 * 300 = Rs. 900
