Question

The average height of each person in group 'E' having 40 people is 15 cm less than the average height of each person in group 'F' having 35 people. If the sum of the heights of all people in group 'E' is the same as that in group 'F', then what is the average height of a person in group 'F'?

A 165 cm
B 135 cm
C 150 cm
D 120 cm
E None of these
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