notthatsmart4783 notthatsmart4783
  • 20-02-2024
  • Mathematics
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My younger sister's age today is 3 times what it will be 3 years from now minus 3 times what her age was 3 years ago. Find her present age.
a) 9 years
b) 12 years
c) 15 years
d) 18 years

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