Selected MCQ

Current Question
If one number is 3 times another and their sum is 80, the numbers are ____.
  • A. 20 and 60
  • B. 25 and 55
  • C. 30 and 50
  • D. 15 and 65
Correct Answer: A
Explanation:
Let x + 3x = 80 → x = 20.
Related Question 1
The sum of five consecutive even numbers is 440. Find another set where the second least is 121 less.
  • A. 248
  • B. 240
  • C. 228
  • D. 236
Correct Answer: B
Explanation:
Adjust numbers accordingly.
Related Question 2
If a number is 40% of another and their sum is 140, the numbers are ____.
  • A. 40 and 100
  • B. 50 and 90
  • C. 60 and 80
  • D. 70 and 70
Correct Answer: A
Explanation:
Let larger = 100 → smaller = 40 → sum = 140.
Related Question 3
Three numbers are co-prime. The product of the first two is 551. Find the third.
  • A. 75
  • B. 81
  • C. 85
  • D. 89
Correct Answer: C
Explanation:
Factorization approach.
Related Question 4
Three consecutive odd integers have a sum such that the last two exceed the first by 13. Find numbeRs.
  • A. 9,11,13
  • B. 11,13,15
  • C. 13,15,17
  • D. 7,9,11
Correct Answer: D
Explanation:
Solve a linear relation.
Related Question 5
Three numbers: 5/7 of the first equals 48% of the second, and the second is 1/9 of the third. Find first.
  • A. 168
  • B. 84
  • C. 42
  • D. 21
Correct Answer: D
Explanation:
Solve the proportion.