8. Four mark exercise problems II

The mean height of \(11\) students in a group is \(150 \ cm\). The heights of the students are \(154 \ cm\), \(145 \ cm\), \(Y \ cm\), \(Y + 4 \ cm\), \(160 \ cm\), \(151 \ cm\), \(149 \ cm\), \(149 \ cm\), \(150 \ cm\), \(144 \ cm\), and \(140 \ cm\). Find the value of \(Y\) and the heights of the two students?

 

 

Value of \(Y =\) \(cm\)

 

Heights of two students \(=\) 142 cm, 146 cm152 cm, 156 cm150 cm, 154 cm