The average age of 5 students is 9 years.out of them the ages of 4 students are 5,7,8 and 15 years.what is the age of the remaining student
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Answer:
10 years
Step-by-step explanation:
Average age = 9 years
=>Sum of all their ages = 9*5=45
=>Let the last person's age = x years
5+7+8+15+x=45
=>35+x=45
=>x=10 years
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