Average
Total Questions: 19
1) In 201l1, the arithmetic mean of the annual incomes of Ramesh and Suresh was Tk. 3800. The arithmetic mean of the annual incomes of Suresh and Pratap was Tk.4800, and the arithmetic mean of the annual incomes of Pratap and Ramesh was Tk.5800. What is the arithmetic mean of the incomes of the three?
- A: 400
- B: 4200
- C: 4400
- D: 4800
2) The average weight of 39 Students in a class is 23. Among them Sita is the heaviest while Tina is the lightest. If both of them are excluded from the class still the average remains same. The ratio of weight of Sita to Tina is 15:8.Then what is the weight of the Tina?
- A: 15
- B: 16
- C: 18
- D: 19
3) Mr. Ravi’s family has 10 males and a few females, the average monthly consumption of rice per hèad is 8 kg. If the average monthly consumption of rice per head be 10 kg in the case of males and 6 kg in the case of females, find the number of females in Ravi’s family?
- A: 2
- B: 4
- C: 6
- D: 10
4) Mr.Suresh’s average monthly expenditure for the first four months of the year was Tk.260 For the next five months,the average monthly expenditure was Rs.40 more than what it was during the first four months. If he spent Tk.560 in all during the remaining three months of the year, Find what percentage of his annual income of Rs.5000 did he save in the year?
- A: 42%
- B: 48%
- C: 38%
- D: 24%
5) In a particular week the average number of people visited the museum is 70. If we exclude the holidays then the average number is increased by 28. Further if we exclude the day which the maximum of 210 visitors visited the museum, then the average become 40.Find the no of holidays in the week?we
- A: none
- B: one
- C: three
- D: two
6) There are 10 compartments in passenger train carries on average 15 passengers per compartment. If at least 15 passengers were sitting in each compartment, no any compartment has equal no of passengers, and any compartment does not exceed the number of average passengers except 10th compartment. Find | how many passengers can be accommodated in 10 th compartment ?
- A: 38
- B: 51
- C: 47
- D: 50
7) 12. The average weight o40 students in a class is 75 kg. By mistake the weights of two students are read as 74 kg and 66 kg respectively instead of 66 kg and 54 kg. Find the corrected average weight of the class
- A: 73.50 kg
- B: 74.50kg
- C: 75.50kg
- D: 76.50
8) 13. If the average marks of 1/5h of class is 70% and 2/5 th class is 45% and the average mark of remaining class is 60%, then the average % of the whole class is
- A: 73%
- B: 45%
- C: 62%
- D: 56%
9) 11. 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
- B: 15
- C: 16
- D: 18
10) A cricketer had an average number of runs as 32 after playing 10-innings. If he wants to make his average run ratę increased by 4, then how much runs will he have to take in his next inning?
- A: 66
- B: 84
- C: 62
- D: 76
11) In a hostel there are 30 students and if the number of students increased by 5 then the expense is increased by 40 per day. But the average expenditure diminishes by 3. Find the original expenditure.
- A: 810
- B: 870
- C: 910
- D: 950
12) The average age of a class of 20 students is 12 years. Out of which one student whose age is 10 years left the class and two new boys entered the class. The average of the class remains the same and the difference between the ages of new boys is 4 year. What will be the age of younger one.
- A: 8
- B: 9
- C: 10
- D: 11
13) The batting average of a batsman for 20 innings is 35 and the difference between the runs of best inning and worst inning is 50. If these two innings are not included the ayerage becomes 32 for 18 innings. The best score of the batsman is.
- A: 91
- B: 77
- C: 87
- D: 82
14) The average ages of 4 member, each having the age difference of 2yrs is 54 yrs. What is the sum of the youngest and oldest family member?
- A: 102
- B: 105
- C: 107
- D: 108
15) The average age of 5 children of a family is 10 years but if we include the age of father and mother then the average age becomes 22 years. It is given that father age is 6 years more than the mother so what will be the age of mother at present.
- A: 47
- B: 48
- C: 49
- D: 50
16) The average of the five numbers is 7.if one of the numbers is multiplied by 3,the average the number increases too 9.4.which of the five numbers is multiplied by 3
- A: 4
- B: 5
- C: 5.6
- D: . 6
17) A batsman in his 17th innings makes a score of 85, and thereby increases his average by 3 What is his average after 17 innings?
- A: 30
- B: 37
- C: 40
- D: 45
18) The average age ofa family of 6 members is 22 years, If the age of the youngest member years, then what was the average age of the family at the birth of the youngest member
- A: 15
- B: 18
- C: 28
- D: 24
19) The Average of marks obtained by 120 candidates in a certain examination is 35. 1f the average marks of passed candidates is 39 and that of failed candidates is 15, what is th number of candidates who passed the examination?
- A: 90
- B: 100
- C: 108
- D: 115
Time: 60s |
Correct: 0 |
Wrong: 0