WBCS.LIVE practice question

The ratio of two numbers is 4 : 5 and their L.C.M. is 100. Determine their sum?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 90
  2. 40
  3. 50
  4. 45

Correct answer and explanation

Correct answer: 45

Explanation: āœ… Correct Answer: D. 45 šŸ“š Explanation: Let the numbers be 4x and 5x. Their L.C.M. is 20x. According to the problem, 20x = 100, which means x = 5. The two numbers are 4 multiplied by 5, which is 20, and 5 multiplied by 5, which is 25. Adding these two together (20 + 25) results in a total sum of 45.