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The total of the ages of a class of 60 girls is 900 years. The average age of 20 girls is 12 years and that of the other 20 girls is 16 years. What is the average age of the remaining girls?
5Q:
The total of the ages of a class of 60 girls is 900 years. The average age of 20 girls is 12 years and that of the other 20 girls is 16 years. What is the average age of the remaining girls?
- 114 yearsfalse
- 215 yearsfalse
- 316 yearsfalse
- 417 yearstrue
- 5None of thesefalse
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