Question

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

Answer 1

make linear equation in one variable out of it.. and solve

Answer 2

Let the capacity of container be 'x' l
container of milk is 4/5 full=4x/5
10 l of milk is poured in container.
Therefore portion of container filled with milk=9x/10
As per given condition we have,
4x/5+10=9x/10
10=9x/10-4x/5
10=(9x-8x)/10
100=x
Hence capacity of container is of 10 l.