# Let the harmonic mean and geometric mean of two positive  numbers be the ratio 4 : 5.Then the two number are in the ratio=

Arun Kumar IIT Delhi
8 years ago
Hello Student,
$\\\sqrt{ab}={2ab \over a+b}*{5 \over 4} \\=>4(a+b)=10\sqrt{ab} \\=>4(\sqrt{a \over b}+\sqrt{b \over a})=10 \\=>t+1/t=5/2$