Question

5) Sarita bought 2/5 m of ribbon and Lalita 3/4m of ribbon. What is the total
length of the ribbon they bought?​

Answer 1

Answer:

ribbon sarita bought= 2/5m

ribbon Lalita bought = 3/4m

Total length of ribbon = 2/5 + 3/4

= 8/20 + 15/20

= 23/20m

Therefore, the total length of ribbon is 23/20m.

Answer 2

Given :–

• Sarita bought $\dfrac{2}{5} \: m$ of ribbon.
• Lalita bought $\dfrac{3}{4} \: m$ of ribbon.

To Find :–

• The total length of the ribbon they bought.

Solution :–

Let,

The total length of the ribbon be x.

According to the question,

• Ribbon bought by Sarita + Ribbon bought by Lalita = Total length of the ribbon they bought.

Given values are,

• Ribbon bought by Sarita = $\dfrac{2}{5} \: m$
• Ribbon bought by Lalita = $\dfrac{3}{4} \: m$

Now, put both the given values for finding the total length of the ribbon they bought.

$\longrightarrow\dfrac{2}{5} + \dfrac{3}{4} = x$

Now, take the L.C.M. (least common multiple) of the denominators.

So, 20 is the L.C.M. of 5 and 4.

● L.C.M. is in the attachment ●

Now,

$\longrightarrow \dfrac{2 \times 4 +3 \times 5}{20} = x$

Multiply the numerators.

$\longrightarrow\dfrac{8 + 15}{20} = x$

Add the numerators.

$\longrightarrow\dfrac{23}{20} = x$

Hence,

The total length of the ribbon they bought is $\dfrac{23}{20} \: m$