JEE Previous Year Question

The cycloalkene (X) on bromination consumes one mole of bromine per mole of (X) and gives the product (Y) in which $C\text{:}\text{Br}$ ratio is $3\text{:}1$. The percentage of bromine in the product $\text{(}Y\text{)}$ is $\text{\_}\text{\_}\text{\_}\text{\_}$ %. (Nearest integer) (Given : molar mass in ${\text{gmol}}^{-1}H\text{:}1\text{,}C\text{:}12\text{,}O\text{:}16\text{,}\text{Br}\text{:}80$ )

Topic: JEE PYQ

Answer: 66. Full step-by-step solution below.