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Maths Puzzle
Numerical Ability
Averages
The average age of 35 students in a class is 16 years. Out of these students the average age of 21 students is 14 years. The average age of remaining students is-
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- sum of 35 students= 16*35=560
sum of 21 students= 14*21=294
sum of remaining 14 students= 560-294=266
hence, average= 266/14 = 19 - 10 years agoHelpfull: Yes(4) No(0)
- total age of 35 std=35*16=560
total age of 21 std=21*14=294
total age of remaing std i.e 14 std=266
avg age of remaining std=266/14=19 - 10 years agoHelpfull: Yes(1) No(0)
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