The average age of 40 boys in a class is 15. The average age of a group of 18 boys in the class is 16 and the average age of another boys in the class is 14. What is the average age of the remaining boys in the class??
(1) 15.25 years
(2) 14.4 years
(3) 14.75 years
(4) None of these
(5) cannot be determined
.
(1) 15.25 years
(2) 14.4 years
(3) 14.75 years
(4) None of these
(5) cannot be determined
.
Watch this space for answer in a week.
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