The temperature of equal masses of three different liquids \( x \), \( y \) and \( z \) are \( 10^{\circ}\text{C} \), \( 20^{\circ}\text{C} \) and \( 30^{\circ}\text{C} \) respectively. The temperature of mixture when \( x \) is mixed with \( y \) is \( 16^{\circ}\text{C} \) and that when \( y \) is mixed with \( z \) is \( 26^{\circ}\text{C} \). The temperature of mixture when \( x \) and \( z \) are mixed will be:
