Question

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

Answer 1

Length of ribbon Sarita bought $=\frac{2}{5}$ meter

Length of ribbon Lalita bought $=\frac{3}{4}$ meter

Total length of ribbon $=\frac{2}{5}+\frac{3}{4}$

LCM of $5$ & $4$ is $20$

$\frac{4\times 2}{5\times 4}+\frac{3\times 5}{4\times 5}$

$=\frac{8}{20}+\frac{15}{20}$

$=\frac{23}{20}$

Thus,they bought $\frac{23}{20}$ meters of ribbon together.