Question

a jug contains 1l of water. Half of jug can fill 4 water bottles. Then from three bottles 5 glasses are filled. What is the capacity of one glass ?

Answer 1

A jug contains 1 l of water.
Half of jug = $\frac{1}{2}$ liters
Half of jug can fill 4 water bottles.
Since, 4 water bottles contain $\frac{1}{2}$ liters of water.
So, 1 water bottle contains $\frac{{\displaystyle \frac{1}{2}}}{4}=\frac{1}{8}$ liters of water.
Then, 3 water bottles contain $\frac{1}{8}\times 3=\frac{3}{8}$ liters of water.
Now, from three bottles 5 glasses are filled.
Since 5 glasses contain $\frac{3}{8}$ liters of water.
So, 1 glass contains $\frac{{\displaystyle \frac{3}{8}}}{5}=\frac{3}{40}$ liters of water.
Therefore, capacity of one glass is 3/40 liters of water.