Engineering Board Exam Reviewer · Percentage & Ratio Problems · medium

If A:B=2:3 and B:C=4:5, find A:B:C.

  1. 2:3:5
  2. 8:12:15
  3. 8:6:5
  4. 4:6:5

Answer

B. 8:12:15

Solution

Make the B terms equal (LCM of 3 and 4 is 12): A:B=8:12 and B:C=12:15. So A:B:C=8:12:15.

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