Question

The third propotional to 0.8 and 0.2 is ?

• A. 0.4
• B. 0.8
• C. 0.05
• D. 0.032

Answer 1

Answer:

C. 0.05

Let 0.8 : 0.2 : : 0.2 : N Then 0.8 x N = 0.2 x 0.2 ∴ N = ( 0.2 x 0.2) / 0.8 = 0.04 / 0.08 = 4/80 = 0.05