3 years ago

2. The average age of 25 students is 10years

Mathematics

1 answer:

valentina_108 [34]3 years ago

4 0

Answer:

12.7 years to the nearest tenth.

Step-by-step explanation:

The total of the ages for the 25 students = 10*25 = 250.

For the 30 students it is 15*30 = 450.

The average for the 2 classes = (250 + 450) / (25 + 30)

= 700 / 55

= 12.7 years to the nearest tenth.

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