Question

Multiply.$1\frac{4}{7}\times 3\frac{3}{4}$

Answer 1

Find.$1\frac{4}{7}\times 3\frac{3}{4}$

$$\begin{gathered} 1\frac{4}{7}\times 3\frac{3}{4}=\frac{(7\times 1+4)}{7}\times \frac{(4\times 3+3)}{4} \\ =\frac{11}{7}\times \frac{15}{4} \\ =\frac{165}{28} \\ =5\frac{25}{28} \\ \therefore 1\frac{4}{7}\times 3\frac{3}{4}=5\frac{25}{28} \end{gathered}$$