rubydai03
rubydai03 rubydai03
  • 17-02-2018
  • Mathematics
contestada

If Nina is N years old now and Maryna is M years old now, write…

Four years ago, Nina was three times as old as Maryna was.

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Banabanana
Banabanana Banabanana
  • 17-02-2018
N-4 = 3·(M-4)    ← answer
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