The schuller family has five members. dad is 6ft 2in tall. mom is 3 inches shorter than dad, but 2 inches taller than ivan. marcia is 5 inches shorter than ivan, but twice as tall as sally-jo. what is the mean height of the schuller family?

62 inches

Step-by-step explanation:

Let x be the height ( in inches ) of Ivan,

∵ Marcia is 5 inches shorter than Ivan,

height of Marcia = x - 5,

Marcia is  twice as tall as Sally-Jo,

height of sally-jo =

Mom is 2 inches taller than Ivan.

⇒ height of mom = x + 2,

Mom is 3 inches shorter than Dad,

height of dad = x + 2 + 3 = x + 5,

So, mean height of family is,

According to the question,

x + 5 = 74 ( 1 ft = 12 in )

x = 69

Hence, mean height of the family =

= 62 inches