Selected MCQ

Current Question
In a factory, 40% are technicians and 60% non-technicians. If 60% of technicians and 40% of non-technicians are permanent, what percentage of employees are permanent?
  • A. 32%
  • B. 42%
  • C. 52%
  • D. 62%
Correct Answer: C
Explanation:
The weighted average gives 52%.
Related Question 1
The population of a town increased from 175000 to 262500 in 10 years. Find the average annual percentage increase.
  • A. 4.37%
  • B. 5%
  • C. 6%
  • D. 8.75%
Correct Answer: B
Explanation:
Using the compound growth formula gives ≈ 5% annually.
Related Question 2
In two years, 100 and 75 students appeared. Pass percentages were 75% and 60%. Overall pass % is ____.
  • A. 68 4/7 %
  • B. 78%
  • C. 80%
  • D. 80 4/7%
Correct Answer: A
Explanation:
The weighted average is 68 4/7%.
Related Question 3
If errors of 5% and 3% are made in measuring the sides of a rectangle, what is the percentage error in the area?
  • A. 8.35%
  • B. 7.15%
  • C. 8.15%
  • D. 6.25%
Correct Answer: C
Explanation:
Total error ≈ 5 + 3 + (5×3)/100 = 8.15%.
Related Question 4
In an office, 6400 employees and 65% are males. How many females?
  • A. 1040
  • B. 2240
  • C. 3120
  • D. 4160
Correct Answer: B
Explanation:
Females = 35% of 6400 = 2240.
Related Question 5
In a class of 120 students, 45 received a grade of B. What percentage is this?
  • A. 75%
  • B. 25.6%
  • C. 37.5%
  • D. 18.5%
Correct Answer: C
Explanation:
(45/120)×100 = 37.5%.