Mathematics
Average / Arithmetic Mean
A factory's average output is 270 units per day for 9 days. It produces 334 units the next day. What is the new daily average?
A. 276.4
B. 281.4
C. 286.4
D. 271.4
Correct Answer: A
New average = (9×270+334)/10 = 276.4 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 260 units per day for 8 days. It produces 322 units the next day. What is the new daily average?
A. 266.89
B. 261.89
C. 276.89
D. 271.89
Correct Answer: A
New average = (8×260+322)/9 = 266.89 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 250 units per day for 7 days. It produces 310 units the next day. What is the new daily average?
A. 257.5
B. 252.5
C. 267.5
D. 262.5
Correct Answer: A
New average = (7×250+310)/8 = 257.5 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 240 units per day for 11 days. It produces 298 units the next day. What is the new daily average?
A. 254.83
B. 239.83
C. 244.83
D. 249.83
Correct Answer: C
New average = (11×240+298)/12 = 244.83 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 230 units per day for 10 days. It produces 286 units the next day. What is the new daily average?
A. 230.09
B. 240.09
C. 235.09
D. 245.09
Correct Answer: C
New average = (10×230+286)/11 = 235.09 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 220 units per day for 9 days. It produces 274 units the next day. What is the new daily average?
A. 220.4
B. 230.4
C. 235.4
D. 225.4
Correct Answer: D
New average = (9×220+274)/10 = 225.4 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 210 units per day for 8 days. It produces 262 units the next day. What is the new daily average?
A. 215.78
B. 220.78
C. 210.78
D. 225.78
Correct Answer: A
New average = (8×210+262)/9 = 215.78 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 200 units per day for 7 days. It produces 250 units the next day. What is the new daily average?
A. 216.25
B. 201.25
C. 206.25
D. 211.25
Correct Answer: C
New average = (7×200+250)/8 = 206.25 units.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 49 after 19 innings. He then scores 74. What is his new batting average?
A. 48.25
B. 52.25
C. 50.25
D. 54.25
Correct Answer: C
New batting mean = (19×49+74)/20 = 50.25.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 48 after 18 innings. He then scores 73. What is his new batting average?
A. 47.32
B. 49.32
C. 51.32
D. 53.32
Correct Answer: B
New batting mean = (18×48+73)/19 = 49.32.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 47 after 17 innings. He then scores 72. What is his new batting average?
A. 48.39
B. 46.39
C. 52.39
D. 50.39
Correct Answer: A
New batting mean = (17×47+72)/18 = 48.39.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 46 after 16 innings. He then scores 71. What is his new batting average?
A. 45.47
B. 49.47
C. 47.47
D. 51.47
Correct Answer: C
New batting mean = (16×46+71)/17 = 47.47.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 45 after 15 innings. He then scores 70. What is his new batting average?
A. 48.56
B. 44.56
C. 50.56
D. 46.56
Correct Answer: D
New batting mean = (15×45+70)/16 = 46.56.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 44 after 14 innings. He then scores 69. What is his new batting average?
A. 45.67
B. 43.67
C. 49.67
D. 47.67
Correct Answer: A
New batting mean = (14×44+69)/15 = 45.67.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 43 after 13 innings. He then scores 68. What is his new batting average?
A. 44.79
B. 46.79
C. 48.79
D. 42.79
Correct Answer: A
New batting mean = (13×43+68)/14 = 44.79.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 42 after 12 innings. He then scores 67. What is his new batting average?
A. 45.92
B. 41.92
C. 47.92
D. 43.92
Correct Answer: D
New batting mean = (12×42+67)/13 = 43.92.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 41 after 11 innings. He then scores 66. What is his new batting average?
A. 41.08
B. 47.08
C. 43.08
D. 45.08
Correct Answer: C
New batting mean = (11×41+66)/12 = 43.08.
Mathematics
Average / Arithmetic Mean
A cricketer has a batting average of 40 after 10 innings. He then scores 65. What is his new batting average?
A. 46.27
B. 44.27
C. 40.27
D. 42.27
Correct Answer: D
New batting mean = (10×40+65)/11 = 42.27.
Mathematics
Average / Arithmetic Mean
A candidate averages 64 marks over 10 papers. After scoring 88 in one more paper, what is the new average?
A. 66.18
B. 64.18
C. 70.18
D. 68.18
Correct Answer: A
New mean = (10×64+88)/11 = 66.18.
Mathematics
Average / Arithmetic Mean
A candidate averages 63 marks over 9 papers. After scoring 86 in one more paper, what is the new average?
A. 63.3
B. 67.3
C. 65.3
D. 69.3
Correct Answer: C
New mean = (9×63+86)/10 = 65.3.