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Question

# The average height of 13 girls in a class is 144813 cm. The average height of 11 boys in the class is 169511 cm. There are only 24 students in the class. What is the overall average height (in cm) of all the students together in the class?

A
15634
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B
156
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C
153
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D
159
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E
15335
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Solution

## The correct option is B 156Here, sum of the total height of 13 girls in the class =13×188013 = 1880 cm Sum of the total height of 11 boys in the class =11×186411=1864 cm ∴ Overall average height =1880+186424 = 156 cm

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