2) The average age of 18 boys is 16 years, 2 months and average age of 12 girls is 15 years 9 months. Find the average age of all 30 students.
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Answer:
16 years
Step-by-step explanation:
16years 2months = 194months
194*18=3492
15years 9months = 189months
189*12=2268
average = (3492+2268)/30 = 192months
192months = 16years
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