Mathematics
Average / Arithmetic Mean
Average monthly income for 7 months is Rs. 59000. What income in the next month will raise the average to Rs. 62000?
A. 84000
B. 82000
C. 83000
D. 85000
Correct Answer: C
Required next income = (8×62000)−(7×59000) = Rs. 83000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 6 months is Rs. 57000. What income in the next month will raise the average to Rs. 60000?
A. 80000
B. 79000
C. 77000
D. 78000
Correct Answer: D
Required next income = (7×60000)−(6×57000) = Rs. 78000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 5 months is Rs. 55000. What income in the next month will raise the average to Rs. 58000?
A. 75000
B. 74000
C. 73000
D. 72000
Correct Answer: C
Required next income = (6×58000)−(5×55000) = Rs. 73000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 9 months is Rs. 53000. What income in the next month will raise the average to Rs. 56000?
A. 83000
B. 82000
C. 85000
D. 84000
Correct Answer: A
Required next income = (10×56000)−(9×53000) = Rs. 83000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 8 months is Rs. 51000. What income in the next month will raise the average to Rs. 54000?
A. 79000
B. 80000
C. 77000
D. 78000
Correct Answer: D
Required next income = (9×54000)−(8×51000) = Rs. 78000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 7 months is Rs. 49000. What income in the next month will raise the average to Rs. 52000?
A. 73000
B. 74000
C. 75000
D. 72000
Correct Answer: A
Required next income = (8×52000)−(7×49000) = Rs. 73000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 6 months is Rs. 47000. What income in the next month will raise the average to Rs. 50000?
A. 67000
B. 70000
C. 69000
D. 68000
Correct Answer: D
Required next income = (7×50000)−(6×47000) = Rs. 68000.
Mathematics
Average / Arithmetic Mean
Average monthly income for 5 months is Rs. 45000. What income in the next month will raise the average to Rs. 48000?
A. 64000
B. 62000
C. 65000
D. 63000
Correct Answer: D
Required next income = (6×48000)−(5×45000) = Rs. 63000.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 31°C. The seventh day's temperature is 46°C. What is the weekly average?
A. 32.14°C
B. 35.14°C
C. 33.14°C
D. 34.14°C
Correct Answer: C
Weekly mean = (6×31+46)/7 = 33.14°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 30°C. The seventh day's temperature is 44°C. What is the weekly average?
A. 34°C
B. 31°C
C. 32°C
D. 33°C
Correct Answer: C
Weekly mean = (6×30+44)/7 = 32°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 29°C. The seventh day's temperature is 42°C. What is the weekly average?
A. 30.86°C
B. 32.86°C
C. 31.86°C
D. 29.86°C
Correct Answer: A
Weekly mean = (6×29+42)/7 = 30.86°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 28°C. The seventh day's temperature is 40°C. What is the weekly average?
A. 28.71°C
B. 29.71°C
C. 31.71°C
D. 30.71°C
Correct Answer: B
Weekly mean = (6×28+40)/7 = 29.71°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 27°C. The seventh day's temperature is 38°C. What is the weekly average?
A. 29.57°C
B. 30.57°C
C. 27.57°C
D. 28.57°C
Correct Answer: D
Weekly mean = (6×27+38)/7 = 28.57°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 26°C. The seventh day's temperature is 36°C. What is the weekly average?
A. 27.43°C
B. 29.43°C
C. 26.43°C
D. 28.43°C
Correct Answer: A
Weekly mean = (6×26+36)/7 = 27.43°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 25°C. The seventh day's temperature is 34°C. What is the weekly average?
A. 25.29°C
B. 28.29°C
C. 26.29°C
D. 27.29°C
Correct Answer: C
Weekly mean = (6×25+34)/7 = 26.29°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 24°C. The seventh day's temperature is 32°C. What is the weekly average?
A. 24.14°C
B. 27.14°C
C. 26.14°C
D. 25.14°C
Correct Answer: D
Weekly mean = (6×24+32)/7 = 25.14°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 23°C. The seventh day's temperature is 30°C. What is the weekly average?
A. 25°C
B. 23°C
C. 26°C
D. 24°C
Correct Answer: D
Weekly mean = (6×23+30)/7 = 24°C.
Mathematics
Average / Arithmetic Mean
The average temperature for the first 6 days of a week is 22°C. The seventh day's temperature is 28°C. What is the weekly average?
A. 23.86°C
B. 21.86°C
C. 22.86°C
D. 24.86°C
Correct Answer: C
Weekly mean = (6×22+28)/7 = 22.86°C.
Mathematics
Average / Arithmetic Mean
A factory's average output is 290 units per day for 11 days. It produces 358 units the next day. What is the new daily average?
A. 295.67
B. 305.67
C. 290.67
D. 300.67
Correct Answer: A
New average = (11×290+358)/12 = 295.67 units.
Mathematics
Average / Arithmetic Mean
A factory's average output is 280 units per day for 10 days. It produces 346 units the next day. What is the new daily average?
A. 281
B. 286
C. 291
D. 296
Correct Answer: B
New average = (10×280+346)/11 = 286 units.