Q1. The sum of three numbers is 98. If the ratio between first and second be 2: 3 and between second and third be 5: 8, then the second number is:
Q2. It rained as much on Wednesday as on all the others days of the week combined. If the average rainfall for the whole week was 3 cm, then how much did it rain on Wednesday?
(a) 2.625 cm
(b) 3 cm
(c) 10.5 cm
(d) 15 cm
Q3. The average of marks obtained by 120 candidates was 35. If the average of marks of passed candidates was 39 and that of failed candidates was 15, the number of candidates who passed the examination is:
Q4. In a coconut grove, (x + 2) trees yield 60 nuts per year, x trees yield 120 nuts per year, and (x – 2) trees yield 180 nuts per year. If the average yield per year per tree be 100, find the value of x.
Q5. Visitors to a show were charged Rs. 15.00 each on the first day, Rs. 7.50 on the second, Rs. 2.50 on the third day. Visitors total attendance for three days were in the ratio 2: 5: 13. Find out the average charge per visitor for the entire show.
(a) Rs. 7
(b) Rs. 5
(c) Rs. 9
(d) Rs. 11
Q6. A man whose bowling average is 12.4, takes 5 wickets for 26 runs and, thereby decreases his average by 0.4. The number of wickets, taken by him, before his last match is:
Q7. The average expenditure of a man for the first five months is Rs. 3600 and for next seven months it is Rs. 3900. If he saves Rs. 8700 during the year, his average income per month is:
(a) Rs. 4500
(b) Rs. 4200
(c) Rs. 4050
(d) Rs. 3750
Q8. The average age of a committee of 8 members is 40 years. A member, aged 55 years, retired and he was replaced by a member aged 39 years. The average age of the present committee is:
(a) 39 years
(b) 38 years
(c) 36 years
(d) 35 years
Q9. The average monthly salary of all the employees in an industry is Rs. 12,000. The average salary of male employees is Rs. 15,000 and that of female employees is Rs. 8,000. What is the ratio of male employees to female employees?
(a) 5 : 2
(b) 3 : 4
(c) 4 : 3
(d) 2 : 5
Q10. The sum of five consecutive integers is a and the sum of next five consecutive integers is b. Then ((b-a))/100 is equal to:
Q11. The average value of the numbers 15, 21, 32, 35, 46, x, 59, 65, 72 should be greater than or equal to 43 but less than or equal to 44. Then the value of x should be:
(a) 42 <=x <= 51
(b) 43 < x > 50
(c) 42 > x >= 49
(d) 43 < =x <= 50
Q12. In a school with 600 students, the average age of the boys is 12 years and that of the girls is 11 years. If the average age of the school is 11 years and 9 months, then the number of girls in the school is:
Q13. The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and another item 43 was misread as 34. It was also found that the number of items was 90 and not 100. Then what is the correct mean?
Q14. The average of 5 consecutive integers starting ‘m’ is n, what is the average of 6 consecutive integers starting with (m + 2)?
(a) (2n + 5)/2
(b) (n + 2)
(c) (n + 3)
(d) (2n+ 9)/2
Q15. The average of two numbers A and B is 20, that of B and C is 19 and of C and A is 21. What is the value of A?