Saritha's purchase:
Saritha bought 2/5 meters of ribbon.

Lalitha's purchase:
Lalitha bought 3/4 meter of ribbon.

Total length of ribbon:
To find the total length of ribbon, we need to add the lengths bought by both Saritha and Lalitha.

Converting fractions to a common denominator:
Since the fractions have different denominators, we need to convert them into a common denominator before adding them.

- The denominator of Saritha's fraction is 5.
- The denominator of Lalitha's fraction is 4.

To find a common denominator, we need to find the least common multiple (LCM) of 5 and 4, which is 20.

Converting Saritha's fraction:
To convert Saritha's fraction to have a denominator of 20, we multiply both the numerator and denominator by 4:

2/5 * 4/4 = 8/20

Converting Lalitha's fraction:
To convert Lalitha's fraction to have a denominator of 20, we multiply both the numerator and denominator by 5:

3/4 * 5/5 = 15/20

Adding the lengths:
Now that both fractions have a common denominator of 20, we can add them:

8/20 + 15/20 = 23/20

Simplifying the fraction:
To simplify the fraction, we divide both the numerator and denominator by their greatest common divisor (GCD), which is 1 in this case:

23/20 ÷ 1/1 = 23/20

Final answer:
The total length of ribbon bought by Saritha and Lalitha is 23/20 meters.

Hmm