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CSIR NET 2023 || General Aptitude || 28.11.2022
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Question 1
If 10 persons can dig 8 feet trench in 12 days, then how many days will 8 persons take to dig 6 feet trench?
Question 2
‘A’ is thrice as good a workman as ‘B’ and takes 10 days less to do a piece of work than ‘B’ takes. The number of days taken by ‘B’ alone to finish the work is
Question 3
Two pipes A and B can fill a tank in 60 minutes and 75 minutes respectively. There is also an outlet C. If A, B and C are opened together, the tank is full in 50 minutes. How much time will be taken by C to empty the full tank?
Question 4
The ratio of present ages of two boys is 5 : 7. After 4 years the ratio will be 7 : 9. What will be the ratio of their ages after 14 years from present?
Question 5
How much tea at Rs. 5 a kg should be added to 24 kg of tea at Rs. 18 a kg so that the mixture be worth Rs. 13 a kg ?
Question 6
In a class of 56 students there are 21 girls. The average weight of these girls is 56 Kg and average weight of the full class is 62.875 kgs. What is the average weight of the boys of the class?
Question 7
The average of 29 numbers is 38. The average of the first 19 numbers is 34 and that of the last 9 numbers is 48. The 20th number is:
Question 8
The mean of marks secured by 45 students in division A of class X is 69, 65 students of division B is 65 and that of 50 students of division C is 63. Find the mean of marks of the students of three divisions of Class X.
Question 9
The mean of marks secured by 60 students in division A of class X is 66, 45 students of division B is 62 and that of 75 students of division C is 60. Find the mean of marks of the students of three divisions of Class X.
Question 10
The mean of marks secured by 60 students in division A of class X is 64, 40 students of division B is 60 and that of 60 students of division C is 58. Find the mean of marks of the students of three divisions of class X.
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Nov 28CSIR NET & SET
