Question

$3\frac{3}{4}-1\frac{1}{2}=?$
(a) $2\frac{1}{2}$
(b) $2\frac{1}{4}$
(c) $1\frac{1}{2}$
(d) $1\frac{1}{4}$

Answer 1

(b) $2\frac{1}{4}$
Explanation:

$$\begin{gathered} 3\frac{3}{4}-1\frac{1}{2}=\frac{15}{4}-\frac{3}{2}(\mathrm{L}.\mathrm{C}.\mathrm{M}.\mathrm{of}2\mathrm{and}4=\left(2\times 2\right)=4) \\ =\frac{15-6}{4} \\ =\frac{9}{4}=2\frac{1}{4} \end{gathered}$$