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Question 1 : The average of 3 numbers is 34, If 2 of the numbers are 21 & 23, what is the 3rd number?
(a) 20 (b) 24 (c) 26 (d) 28 (e) 30
Question 2 : If the sum of A and B is 40 and if C=32, what is the average of A, B, C?
(a) 30 (b) 28 (c) 24 (d) 26
Question 3 : If 0.6 is the average of 0.2, 0.8, 1.0 & x, What is the numerical value of x?
(a) 0.2 (b) 0.4 (c) 0.67 (d) 1.3
Question 4 : X's marks are 70, 90, 65, 85 and 75 . What marks he mast got on the next test to raise his average to 80?
(a) 80 (b) 95 (c) 85 (d) 90
Question 5: The average of x and another number is z, the other number must be -
(a) z-x (b) (z+x)/2 (c) 2z+x (d) None
Question 6 : Out of four numbers, the average of first three is 16 and that of the last three is 15. If the last number is 18, the first number is -
(a) 20 (b) 21 (c) 23 (d) 25
Question 7 : The average of six numbers is 30. If the average of first four is 25 and that of last three is 35, the forth number is -
(a) 25 (b) 30 (c) 35 (d) 40
Question 8 : Average marks of 10 students is x. If 5 other students each earned 85 marks join the group, find the average grade of the entire group?
(a) (10x+420)/15 (b) (10x+84)/15 (c) (x+420)/5 (d) (x+84)/2 (e) None
Question 9 : A motorist must complete 180 mile trip in 4 hours, If he drives on an average 50 miles an hours for the first 3 hours of his trip, how fast must he drive in final hours ?
(a) 50 mph (b) 30 mph (c) 60 mph (d) 180 mph
Question 10 : A truck driver must completed a 180 mile trip in 4 hours. If he drives on an average 50 miles an hour for the first 3 hours of his trips, how fast must he drive in final hours?
(a) 50 mph (b) 30 mph (c) 60 mph (d) 180 mph
Question 11 : If the average of 5, 9, k and m is 12, what is the average of k+7 and m-3 ?
(a) 14 (b) 17 (c) 19 (d) 21 (e) 38
Question 12 : The average of a set of 12 numbers, which include 34, is N. If 34 is removed form the set and 38 is added to it, what is the average of the new set of numbers?
(a) N+(1/3) (b) N+(19/3) (c) N+4 (d) N+6 (e) 12N+4
Question 13 : If $ 45000 was invested in share market when the price per share was $ 90 and $ 30000 was invested when the price per share was $ 100. What was the average price per share purchased?
(a) $93.75 (b) $90 (c) $96.25 (d) $94
Question 14 : A garment worker is paid d Tk per hour for the first 8 hours she works in a day. For every hour after the first 8 hours, she is paid C Tk per hour. If she works 12 hours in one day, what is her average hourly wage for that day?
(a) (2d+c)/3 (b) 8d+4c (c) (8d+12c)/12 (d) (4d+8c)/12 (e) d+(1/3)c
See answer end of the page.
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