CMAT 2022 Solved Question Paper

Given average age of three friends is 20 years
Sum of their ages $=3\times 20=60$ years
Given, their ages are in ratio 2:3:5. Let their ages be $2\mathrm{x},3\mathrm{x}$ and $5\mathrm{x}$
$2\mathrm{x}+3\mathrm{x}+5\mathrm{x}=60$
$10\mathrm{x}=60$
$\mathrm{x}=6$
Their ages are 12 years, 18 years and 30 years Age of oldest friend $=30$ years
Answer is option C.