West Bengal Board Solutions for Chapter: Multiplication and Division of a Fraction by Whole Number and by Fraction, Exercise 19: Let's work out 6

Today Father has bought $10 l$ of drinking water from a nearby tube well. Mother used $\frac{1}{5}$ part of water for cooking and $\frac{1}{4}$ part of remaining water was used for drinking purpose. Find how many litres of water is left?

Which number is the reciprocal of itself?

Rama gives me $\frac{2}{3}$ part of the total number of stamps she has. If she gives me $18$ stamps, let us find how many stamps Rama has? 

Rajija gives $\frac{2}{5}$ part of money to Debnath and $\frac{3}{10}$ part of money to Sunita. If she has $₹180$ left. Let us find how much money Rajija had at the beginning?

Find the value:
$15÷\frac{5}{3}$

Find the value:
$14÷\frac{7}{2}$

Find the value:
$\frac{6}{13}÷3$

Find the value:
$\frac{12}{19}÷6$