question_answer 1)

Sarita bought \[\therefore \] metre of ribbon and Lalita bought \[=\frac{\text{Total prime numbers}}{\text{Total natural numbers}}=\frac{5}{11}\] metre of ribbon. What is the total length of the ribbon they bought?

Answer:

Given, ribbon bought by Sarita\[\therefore \] and ribbon bought by Lalita \[=\frac{\text{Total prime numbers}}{\text{Total natural numbers}}=\frac{4}{12}=\frac{1}{3}\] \[\therefore \] Total length of the ribbon bought by them \[=\frac{4}{8}\] Now, LCM of 5 and 4 = 20 \[=\frac{3}{8}\]\[=\frac{5}{8}\] Hence, total length of the ribbon bought by them is \[\left[ \text{also}\frac{0}{5}=0 \right]\]