Question

The length of the ribbon was originally $30cm$. It was reduced in the ratio $5:3$. What is its length now?

• A. $15$
• B. $18$
• C. $20$
• D. $25$

Answer 1

The correct option is B $18$

Length of ribbon originally $=30cm$
Let the original length be $5x$ and reduced length be $3x$.
But $5x=30cm$
$⟹x=\frac{30}{5}cm=6cm$
Therefore, reduced length $=3\times 6cm=18cm$