Question

A container is 4/5 full.when 10 l of milk is poured into it,the container becomes 9/10 full.what is the capacity of the conrainer

Answer 1

Let the capacity of the container be x liter.
Given,
$\frac{4}{5} x + 10 = \frac{9}{10} x \\ ( \frac{9}{10} - \frac{4}{5} )x = 10 \\ \frac{1}{10} x = 10 \\ x = 100 \: \: liter$