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Q. Numbers of boys and girls are ‘x’ and ‘y’ respectively. Ages of a girl and a boy are ‘a’ years and ‘b’ years respectively. The average age (in years) of all boys and girls is
A
x+y/bx+ay
B
bx+ay/x+y
C
ax+by/x+y
D
x+y/ax+by

View Answer Option (C)   English

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