Question

Are $39$ liters $:65$ liters$::6$ bottles $:10$ bottles are in proportion.

Answer 1

$39lit.:65lit.$

$6bottle:10bottles$

$39lit$ need of $6bottle$

so $65lit$ need of $10bottle$

$\frac{39}{6}=\frac{65}{10}$ or $\frac{39}{65}=\frac{6}{10}$

$=\frac{3}{5}$