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See image for question. Please show workings.​
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3 votes
See image for question. Please show workings.​

See image for question. Please show workings.​-example-1
User Bori
by
6.7k points

1 Answer

5 votes

Answer:

  • 14.3 years

Explanation:

The average age of 18 girls is 12.

Total age of girls:

  • 18*12 = 216

The average age of 15 boys is 17

Total age of boys:

  • 15*17 = 255

Total age of children:

  • 216 + 255 = 471

Total number of children:

  • 18 + 15 = 33

Average age of children:

  • 471 / 33 = 14.3 (rounded)
User Oleksandr Slynko
by
8.3k points
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