Question

If the LCM of two numbers a and b is 60 and their HCF is 15. Determine their mean proportion.

• A. 30
• B. 15
• C. 25
• D. 60

Answer 1

Answer:

A. 30

Product of two numbers ( a × b ) = LCM × HCF a × b = 60 × 15 a × b = 900 The mean proportion is = √ab = √900 = 30