There are 40 female and 20 male students in a class. If the average heights of female and
male students are 5.15 feet and 5.66 feet, respectively, then the average height (in feet)
of all the students in the class equals
🎥 Video solution / Text Solution of this question is given below:
Given: Females = 40 (avg = 5.15 ft), Males = 20 (avg = 5.66 ft). Total students = 60.
Weighted average height =
$$\frac{40\times 5.15 + 20\times 5.66}{40+20}$$