Q. The average age of a group of 15 persons is 29 years. Among them, the age of each of the two persons is 55 years. The average age of the remaining 13 persons is
1) 29 years
2) 27 years
3) 26 years
4) 25 years
Q. The average of five consecutive even numbers starting with 14 is
1) 14
2) 16
3) 12
4) 18
Q. The average age of P, Q, R, S, and T five years ago was 45 years. By including Aditya percent age of all six are 49 years. The present age of Aditya is
1) 65
2) 69
3) 79
4) 89
Q. The average age of 40 numbers is 40. If two numbers 35 and 45 are discarded the average of the remaining set of number is
1) Average increase by 5
2) decrease by 4
3) not change
4) cannot determine
Q. The average age of 25 girls in a class is 15.6 years. 10 new boy join the class and the new average become 16.6 years. What was the average age of 10 new boys?
1) 18
2) 20.1
3) 19.1
4) 14.1
Q. Kohli makes score of 125 runs in his 21st inning and thus increase his average by 4. What is his average after 21st inning?
1) 42
2) 55
3) 35
4) 45
Q. If the price of book is increased by 30% and again increased by 20% then what will be net effect.
1) 50%
2) 10%
3) 55%
4) 56%
Q. If the price of a shirt is increased by 25% and then decreased by 20% and then decreased by 30% then what will be net effect.
1) 12% increase
2) 12% decrease
3) 12.5% increase
4) 12.5% decrease
Q. The average marks of a student in 20 papers are 73. If the highest and lowest marks not considered then the average marks become 72. If the lowest marks is 45 then what is highest marks.
1) 119
2) 117
3) 130
4) 145
Q. The average of 15 numbers is 42.2 latter it is found that 3 numbers are wrongly added. First 42 less than the actual number second 21 instead of 12 and third 31 instead of 13.
1) 40.2
2) 41.2
3) 45.2
4) 55
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