Averages and Ages Level 2

Q: The ratio of the ages A and B is 4:5 respectively. The ratio of their ages, 3 years ago was 5:7. How old is B ?
A: 10 years
Q: In an exam, Amit, Sachin, Kriti, Sandeep, and Ravi scored an average of 39 marks. Sandeep scored 7 marks more than Ravi. Ravi scored 9 fewer than Amit. Sachin scored as many as Sandeep and Ravi scored. Sachin and Kriti scored 110 marks. If Amit scores 32 marks then how many marks did Kriti score?
A: 57
Q: The mean temperature of Monday to Wednesday was 37°C and of Tuesday to Thursday was 34°​C, if the temperature on Thursday was 4/5th that of Monday, then what was the temperature on Thursday?
A: 36
Q: Meena is 24 years old today. Eight years ago, Anju was half the age of Meena. How old is Anju today?
A: 16 years
Q: Neha's mother was four times her age 12 years ago. She will be twice as old as Neha 12 years from now. What is the present age of Neha's mother?
A: 60 years
Q: The difference between the ages of ram and janu is 12 years and their ratio between their ages is 7:3.What is the sum of their ages 5 years hence?
A: 40
Q: If a man spends Rs.1000 for the first five months, Rs.2000 for the next four months and Rs.3000 for the next 3 months and he saves Rs.2000 in the whole year. Then his average monthly salary will be
A: 2000
Q: There is twice the number of two-wheelers as there are three-wheelers and the number of 4-wheelers are equal to the number of two-wheelers. The average number of wheels per vehicle is :
A: 3
Q: Jasper has a brother one-third his age and a sister three times his age. If the combined ages of all three children are five less than twice the oldest, how old is Jasper?
A: 3 years
Q: One brother is 5 years older than the other. One-third of the older brother’s age now is equal to the age of the younger brother 1 year ago. How old will the younger brother be in 4 years?
A: 8
Q: If the ratio of the ages of Shweta and Veena was 5:6 six years ago and it will become 10:11 in 4 years from now. Then find the present age of Veena.
A: 18
Q: The combined age of husband and wife on their 20th wedding anniversary was twice than it was at the time of wedding. If the husband is 3 years older than his wife. How old was he at the time of his marriage?
A: 21.5 years
Q: If 10 years are subtracted from the present age of Ram and the remainder is divided by 14, then you would get the present age of his grandson Shyam. If Shyam is 9 years younger than Sunder whose age is 14, then what is the present age of Ram?
A: 80 years
Q: The ratio between the present ages of A and B is 3:5 respectively. If the difference between B's present age and A's age after 4 years is 2. What is the total of A's and B's present ages?
A: 24 years
Q: The average of marks of 14 students was found to be 71. But it was later found that the marks of one student had been wrongly entered as 42 instead of 56 and of another as 74 instead of 32. Find the correct average.
A: 69
Q: The average presence of students of a class in a College on Monday, Tuesday and Wednesday is 32 and on the Wednesday, Thursday, Friday and Saturday is 30. if the average number of students on all the six days is 26 then the number of students who attended the class on Wednesday is?
A: 60
Q: The ratio between A's and B's ages was 11:4. After 4 years, the ratio of their ages will be 12:5. What is the present age of A?
A: 44
Q: The average age of a class is 19 years. While the average age of boys is 20 and the average age of girls is 17. If the number of boys is 20 then find the number of girls in the class
A: 10
Q: In a class, the average marks got by number of students in English is 52.25. 25% of students placed in C category made an average of 31 marks, while 20% who were placed in A category made an average of 80 marks. Find the average marks of the remaining students.
A: 51.8
Q: The average age of a family of 7 members is 23 years. If the average age of the youngest member be 7 years, then find the average of the family when the youngest member was 1 year old.
A: 17 years
Q: Ayesha's father was 38 years of age when she was born while her mother was 36 years old when her brother four years younger to her was born. What is the difference between the ages of her parents?
A: 6 years
Q: If a hostel’s mess owner expends Rs. 5000 on vegetables, Rs. 3000 on spices and Rs. 6500 on gas services per month for 50 students then what is the monthly average expenditure per student of his hostel’s mess?
A: Rs. 290
Q: The average of 8 numbers is 19. The average of first and sixth numbers is 17 and that of the third, fifth, and seventh numbers is 24. If the second number is less than the fourth number by 8, and greater than the eighth number by 4, then the sum of fourth number and eighth number is:
A: 32
Q: The total age of 45 boys and 40 girls is 1540 years. The total age of 50 boys and 20 girls is 1320. Then the average age of boys is
A: 20 years
Q: The average number of visitors to a library in the first 4 days of a week was 58. The average for the 2nd, 3rd, 4th and 5th days was 60. If the number of visitors on the 1st and 5th days was in the ratio 7:8, then what is the number of visitors on the 5th day of the library?
A: 64
Q: Total expenses of a boarding house are partly fixed and partly varying linearly with the number of boarders. The average expense per boarder is Rs 700 when there are 25 boarders and Rs 600 when there are 50 boarders. What is the average expense per boarder when there are 100 boarders?
A: 550
Q: The average weight of 8 men is increased by 1.5 kg when one of the men whose weight is 65 kg is replaced by a new man. What is the weight of the new man?
A: 77 kg
Q: The average age of Sharmi and Sugathi is 28 years. The ratio of their ages is 4:3 respectively. What will be the age of Sharmi 6 years hence?
A: 38
Q: The present ages of the three persons are in proportions 4 : 7 : 9. Eight years ago, the sum of their ages was 76. Find their present ages (in years).
A: 20, 35, 45
Q: The average age of a group of 4 friends is 36 years. The youngest friend amongst them is 6 years old. What was the average age of the group at the time of the birth of the youngest friend?
A: 40 years