In a class of 88 students, the number of girls is 20% more than the number of boys. The average height of the boys is 164 cm, and the average height of girls is 4 cm less than the average height of all the boys and girls in the class. What is he average height (in cm) of all the students in the class?

In a class of 88 students, the number of girls is 20% more than the nu

1.	In a class of 88 students, the number of girls is 20% more than the number of boys. The average height of the boys is 164 cm, and the average height of girls is 4 cm less than the average height of all the boys and girls in the class. What is he average height (in cm) of all the students in the class?
A.	159.2
B.	155.2
C.	150
D.	163.2
Answer» B. 155.2

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