Respuesta :

Answer:

[tex]15 \: presents = 20 \: hours \\ 18 \: presents = ( \frac{18}{15} \times 20) \: hours \\ = 24 \: hours[/tex]

Time required to wrap 1 present

  • 20/15
  • 4/3h

Tkme to wrap 18 present

  • 18(4/3)
  • 6(4)
  • 24h

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