Average Sheet 1
Q1. The mean of 11 numbers is 35. If the mean of first 6 numbers is 32 and that of the last six numbers is 37, find the sixth number.
(a) 28
(b) 29
(c) 30
(d) 27
Q2. The average of 5 consecutive integers starting with ‘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
Q3. Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of the eight given numbers is:
(a) 54
(b) 64
(c) 36
(d) 48
Q4. The average of four consecutive even numbers is 15. The 2nd highest number is:
(a) 12
(b) 14
(c) 18
(d) 16
Q5. Average of first five odd multiples of 3 is
(a) 12
(b) 16
(c) 15
(d) 21
Q6. In a 20 over the match, the required run rate to win is 7.2. If the run rate is 6 at the end of the 15th over, the required run rate to win the match is:
(a) 1.2
(b) 13.2
(c) 10.8
(d) 12
Q7. If the mean of 4 observations is 20, when a constant ‘C’ is added to each observation, the mean becomes 22. The value of C is:
(a) 6
(b) –2
(c) 2
(d) 4
Q8. The average weight of 40 children of a class is 36.2 kg. when three more children with weight 42.3 kg, 39.7 kg and 39.5 kg join the class, the average weight of the 43 children in the class is :
(a) 39.2 kg
(b) 36.5 kg
(c) 38.35 kg
(d) 37.3 kg
Q9. The average pocket money of 3 friends A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of what A spends during that month and if the average of their unspent pocket money is Rs. 60, then A spends (in Rs.)
(a) Rs. 10
(b) Rs. 20
(c) Rs. 30
(d) Rs. 40
Q10. A man purchases milk for three consecutive years. In the first year, he purchases milk at the rate of Rs. 7.50 per litre, in the second year, at the rate of Rs. 8.00 per litre and in the third year, at Rs. 8.50 per litre. If he purchases milk worth Rs. 4080 each year, the average price of milk per litre for the three years is :
(a) Rs. 7.68
(b) Rs. 7.98
(c) Rs. 7.54
(d) Rs. 7.83
Q11. Six tables and twelve chairs were bought for Rs. 7,800. If the average price of a table is Rs. 750, then the average price of a chair would be :
(a) Rs. 250
(b) Rs. 275
(c) Rs. 150
(d) Rs. 175
Q12. The average age of four boys A, B, C and D is 5 years and the average age of A, B, D, E is 6 years. C is 8 years old. The age of E is (in years)
(a) 12
(b) 13
(c) 14
(d) 15
Q13. The average of some natural numbers is 15. If 30 is added to the first number and 5 is subtracted from the last number the average becomes 17.5 then the number of natural number is
(a) 20
(b) 30
(c) 15
(d) 10
Q14. There is a number consisting of two digits, the digit in the units place is twice than digit in the tens’ place and if 2 subtracted from the sum of the digits, the difference is equal to 1/6th of the number. The number is
(a) 23
(b) 25
(c) 26
(d) 24
Q15. A shop of electronic goods remains closed on Monday. The average sales per day for remaining six days of a week is Rs. 15640 and the average sale of Tuesday to Saturday is Rs. 14124. The sales on Sunday is:
(a) Rs. 23220
(b) Rs. 201888
(c) Data inadequate
(d) 21704
Answers will be updated soon