Maths 68 meters in height and the average age of 51 students is 15 years, out of which the average age of 7 students is 14 years and the average age of 9 students is 16 years. What is the age of the 15th student?
| Q.201685: 68 meters in height and the average age of 51 students is 15 years, out of which the average age of 7 students is 14 years and the average age of 9 students is 16 years. What is the age of the 15th student? |
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