when the company is said to be a subsidiary company of other company?

Prathamesh Pawar (IPCC student) (41 Points)

02 December 2017  
A,B,C, D,E are directors of X Ltd and out of these, A,B,C are also the directors of Y Ltd. No other directors are there in Y Ltd other than mentioned above.
Is company Y Ltd is then considered as subsidiary of X Ltd if combined shareholding of A,B,C in Y Ltd is :
case 1) above 50%
case 2) below 50%