Birthdays 9011
Three sisters have birthdays today, and their ages are in the ratio of 2:3:4. In two years, their ages will be in the ratio of 5:7:9. Find what their ages will be in four years.
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- equation
- expression of a variable from the formula
- arithmetic
- division
- basic functions
- ratio
- reason
- numbers
- fractions
Units of physical quantities:
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