Sarika bought 2/5 meter of ribbon and Lalita 3/4 meter of ribbon. What is the total length of the ribbon they bought?

Ribbon bought by Sarita = 2/5 m and Ribbon bought by Lalita = 3/4m
Total length of ribbon = 2/5+3/4
= 2×4+5×3/20 [L.C.M. of 5 and 4 is 20]
= 8+15/20 = 23/20 = 23/20
Therefore, they bought 23/20 m of ribbon.

https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-7/