The average height of 50 students in a class is 165cm On a particular day three students P Q and R ...........

Quantitative Aptitude ( CCS) Average

The average height of 50 students in a class is 165cm. On a particular day, three students P,Q and R are absent, so the average of the remaining students becomes 163cm. If the height of P and Q is equal and height of R is 2 cm less than P, then find the height of P.

187

192

197

198

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Explanation:

sum of height (50) = 50*165 = 8250
sum of height (47) = 47*163 = 7661
sum of the height of P, Q and R = 8250-7661 = 589
P+P+P-2 = 589 (as height of P is equal to Q and height of R = P - 2)
P = 197