Question

Mrs Soni bought $7\frac{1}{2}$ litres of milk. Out of this milk, $5\frac{3}{4}$ litres was consumed. How much milk is left with her?

Answer 1

Amount of milk left with Mrs. Soni = Total amount of milk bought by her $-$ Amount of milk consumed
$\therefore$ Amount of milk left with Mrs. Soni $$\begin{gathered} =7\frac{1}{2}-5\frac{3}{4} \\ =\frac{15}{2}-\frac{23}{4}\mathrm{L}.\mathrm{C}.\mathrm{M}.\mathrm{of}2\mathrm{and}4=\left(2\times 2\right)=4 \\ =\frac{\left(30-23\right)}{4}\left\{\left[4÷2=2,2\times 15=30\right]\mathrm{and}\left[4÷4=1,1\times 23=23\right]\right\} \\ =\frac{7}{4}=1\frac{3}{4}\mathrm{litres} \end{gathered}$$

$\therefore$ Milk left with Mrs. Soni = $1\frac{3}{4}\mathrm{litres}$