Hi Nikita Please find attached the solution :

_ _ _ _ Last two digits should be divisible by 4. List down all the possibilities for last two digits => 04, 12, 16, 20, 24,32,36,40,44,52,56,60...

AB/AC = BD/DC [ External Angle Bisector Theorem ] 3/5 = BD/( BD + 4) BD = 6 Hence CD = 6 +4 = 10 cm.

Hello Nikita , PFA the solution .