Practice NET Business / Social Sciences questions with answers and explanations.
Choose an option to check your answer.
The average of 1 through n is (n + 1)/2.
Setting (n + 1)/2 = 20 gives n = 39.
Choose an option to check your answer.
The difference between C and A is 2 ratio parts, equal to Rs. 600.
One part is Rs. 300, so 12 parts total Rs. 3,600.
Choose an option to check your answer.
The greatest common divisor of 24 and 36 is 12.
Dividing both terms by 12 gives 2:3.
Choose an option to check your answer.
Three ratio parts correspond to 24, so one part is 8.
Girls represent five parts, giving 5 × 8 = 40.
Choose an option to check your answer.
The total number of ratio parts is 9, so one part is 720/9 = 80.
The largest share is 4 × 80 = Rs. 320.
Choose an option to check your answer.
Make the common term b equal in both ratios.
Multiplying 4:7 by 2 gives 8:14, so a:b:c = 8:14:15.
Choose an option to check your answer.
The cost per pen is 150 ÷ 5 = Rs. 30.
Eight pens cost 8 × 30 = Rs. 240.
Choose an option to check your answer.
Workers and time are inversely proportional for fixed work.
Thus, 12 × 15 = 20 × days, giving 9 days.
Choose an option to check your answer.
The sum is 12 + 18 + 20 + 30 = 80.
Dividing by 4 gives an average of 20.
Choose an option to check your answer.
Total equals average multiplied by the number of values.
Thus, 24 × 5 = 120.
Choose an option to check your answer.
The original total is 8 × 15 = 120.
After removing 22, the total is 98, and 98 ÷ 7 = 14.
Choose an option to check your answer.
The original total age is 4 × 25 = 100 years.
The new total is 5 × 27 = 135, so the new age is 35.
