There were 24 students in a class. One of these, who was 18 years old, left the class and his place was filled up by a new comer. If the average of the class, thereby was lowered by one month, the age of the new comer is |
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a) |
15 years |
b) |
16 years |
c) |
14 years |
d) |
19 years |
There were 24 students in a class. One of these, who was 18 years old, left the class and his place was filled up by a new comer. If the average of the class, thereby was lowered by one month, the age of the new comer is |
|||||||
a) |
15 years |
b) |
16 years |
c) |
14 years |
d) |
19 years |