Question

The arithmetic mean between two numbers is 75 and their geometric mean is 21. Find the numbers.

• A. 3 and 147
• B. 133 and 17
• C. 63 and 87
• D. 73 and 77

Answer 1

Answer:

A. 3 and 147

AM = a+b/2 GM = √ab a+b/2 = 75 a+b=75 x 2 = 150 √ab=21 ab=21² ab=441 a = 3 b = 147