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  • SSC CGL Exam Quantitative Aptitude Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Quantitative Aptitude Averages for SSC CGL Exam student. This free online Quantitative Aptitude study material for SSC CGL Exam will help students in learning and doing practice on Averages topic of SSC CGL Exam Quantitative Aptitude. The study material on Averages, help SSC CGL Exam Quantitative Aptitude students to learn every aspect of Averages and prepare themselves for exams by doing online test exercise for Averages, as their study progresses in class. Kidsfront provide unique pattern of learning Quantitative Aptitude with free online comprehensive study material and loads of SSC CGL Exam Quantitative Aptitude Averages exercise prepared by the highly professionals team. Students can understand Averages concept easily and consolidate their learning by doing practice test on Averages regularly till they excel in Quantitative Aptitude Averages.


Averages
The average of some naturals number is 15. If 30 is added to first number and 5 is subtracted from the last number the average becomes 17.5 then the number of natural umber is

a) 10
b) 20
c) 30
d) 15



Answer
Solution
Correct Answer Is : 10
Solution Is :
A boy found that the average of 20 numbers is 35 when he writes a number `61` instead of `16`. The correct average of 20 number is

a) 34.75
b) 37.25
c) 32.75
d) 34.25



Answer
Solution
Correct Answer Is : 32.75
Solution Is : Correct average = ( 61 - 16/20) = 35 - 45/20 = 35 - 2.25 =32.75
The average run of a player is 32 out of 10 innings. How many runs must he make in the next innings so as to increase his average by 6?

a) 38
b) 98
c) 6
d) 40



Answer
Solution
Correct Answer Is : 98
Solution Is : Runs scored in the next innings = x(let) According to the question 10*32+x=11*38 =320+x=418 x=418-320 =98
The average weight of 3 men A,b and C IS 84KG.Another man D joints the group and the average now becomes 8okg. If another man E Whose weight is 3kg more then that of D, replace A, then the average weight of B,C,D E becomes 79kg. Then weight of A is

a) 74kg
b) 72kg
c) 76kg
d) 75kg



Answer
Solution
Correct Answer Is : 75kg
Solution Is :
The average marks obtained by 15 students including X are 70 and the average marks obtained by 14 students excluding X is 68. What is the marks obtained by X ?

a) 98
b) 78
c) 88
d) None of these



Answer
Solution
Correct Answer Is : 98
Solution Is : Marks obtained by X. = 150 * 70 - 14 * 68 = 1050-952 =98
Mahendra Singh Dhoni has a certain average of runs for his 8 matches in IPL matches. In the ninth match he scores 100 runs and thereby increases his average by 9 runs His new average of runs is :

a) 20
b) 24
c) 28
d) 32



Answer
Solution
Correct Answer Is : 28
Solution Is : Let new average be x runs ∴ (x-9) * 8+100 = 9x =>8x-72+100=9x =>9x-8x=28 =>x=28
The average score of three boys in mathematics is 30. When the score of a fourth boy is added to the total score of the three boys, the average is lowered to 25, What is the score of the fourth boy ?

a) 10
b) 15
c) 20
d) 25



Answer
Solution
Correct Answer Is : 10
Solution Is : Marks obtained by fourth student = 4 * 25 - 3 * 30 = 100-90 = 10
The Average score of a cricketer for 10 matches is 38.9 runs. If the average for the first six matches is 42, find the average of the last four matches:

a) 33.25
b) 33.5
c) 34.25
d) 35



Answer
Solution
Correct Answer Is : 34.25
Solution Is : Total runs of last four matches = 10 * 38.9-6 * 42 = 389 - 252 = 137 ∴ Required average = 137 /4 =34.25
Average age of 30 boys in a class is 10 years. If however, the age of their teacher is also included, then the average increased, then the average increases by one year. What is the age of the teacher?

a) 38 years
b) 40years
c) 30years
d) 41years



Answer
Solution
Correct Answer Is : 41years
Solution Is : Teacher`s age = 31 * 11 - 30 * 10 =341-300 =41 years
The average age of a group of 40 students in a bus is 7 years. When the conductor`s age is included the average age is increased by one year, The age of the conductor is :

a) 40 years
b) 45years
c) 48years
d) None of these



Answer
Solution
Correct Answer Is : 48years
Solution Is : Conductor`s age = 41 * 8 - 40 * 7 =328 - 280 =48 years
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