Arithmetic (Average) Questions and Answers
Practice ModeShowing 10 of 67 questions
Q11
The average of five results is 46 and that of the first four is 45. The fifth result is :
Answer: Option D
Q12
The average of Kanchan's marks in 7 subjects is 75. His average in six subjects excluding Science is 72. How many marks did he get in Science ?
Answer: Option C
Q13
the average of eight numbers is 14.The average of six of these numbers is 16. The average of the remaining two number is :
Answer: Option B
Q14
The average price of three items of furniture is Rs 15000. If their prices are in the ratio 3 : 5 : 7, the price of the cheapest item is:
Answer: Option A
Q15
Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, the largest number is :
Answer: Option C
Q16
The average of ten numbers is 7. if each number is multiplied by 12, then the average of new set of numbers is :
Answer: Option D
Q17
A man spends Rs 1800 monthly on an average for the first four months and Rs 2000 monthly for the next eight months and saves Rs 5600 a year. His average monthly income is :
Answer: Option D
Q18
The average age of 30 students of a class is 12 years. The average age of a group of 5 of the students is 10 years that of another group of 5 of them i 14 years. What is the average age of the remaining students ?
Answer: Option C
Q19
A class has two sections, in one of which there are 40 students with an average of 14.5 years. The average of the class is 14.2 years. If there be 32 students in the other section, its average age is :
Answer: Option D
Q20
The mean of 100 observations was calculated as 40. It was found later on that one of the observations was misread as 83 instead of 53. The correct mean is :
Answer: Option B