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if a 12 ounce box of cereal costs $3.84, how many ounces should be in a box marked $2.49?
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Respuesta :

Answer:

  • 7.78 ounces

Step-by-step explanation:

We know that:

  • 12 ounce box of cereal = $3.84

Work:

  • 12/3.84 ounce box of cereal = $1
  • => 12/3.84 x 2.49 box of cereal = $2.49
  • => 7.78 ounces (Rounded to nearest hundredth) = $2.49

Hence, 7.78 ounces cost $2.49.

7.8125 ounces

Step-by-step explanation:

Based on given conditions,

[tex] \frac{2.49 \times 12}{3.84} \\ = > \frac{ \frac{249}{100} \times 12 }{ \frac{384}{100} } [/tex]

[tex] = > \frac{ \frac{249}{25} \times 3 }{ \frac{96}{25} }[/tex]

[tex] = > \frac{249}{25} \times 3 \times \frac{25}{96}[/tex]

[tex] = > 83 \times 3 \times \frac{1}{32} [/tex]

[tex] = > \frac{83 \times 3}{32} [/tex]

[tex] = > \frac{249}{32}[/tex]

[tex] = > 7.78125ounces[/tex]

By rounding off,

[tex] = > 7.9ounces[/tex]

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