Question

Sarita bought $\frac{2}{5}metre$ of ribbon and Lalita bought $\frac{3}{4}metre$ of ribbon. What was the total length of the ribbon they bought together?

Answer 1

Given Sarita bought $\frac{2}{5}metre$ of ribbon

Lalita bought $\frac{3}{4}metre$ of ribbon

To find the total length of the ribbon

Total length of the ribbon $=$Length of ribbon brought by Sarita $+$ Length of ribbon brought by Lalita

$$\begin{gathered} =\frac{2}{5}+\frac{3}{4} \\ =\frac{2\times 4}{5\times 4}+\frac{3\times 5}{4\times 5} \\ =\frac{8}{20}+\frac{15}{20} \\ =\frac{8+15}{20} \\ =\frac{23}{20}metre \end{gathered}$$

Hence, the total length of the ribbon they bought together is $\frac{23}{20}metre$