Middle School

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Rob is saving to buy a new MP3 player. For every $16 he earns babysitting, he saves $5. On Saturday, Rob earned $80 babysitting. How much money did he save?

Answer :

Answer:

He saved $25.

Step-by-step explanation:

  • If Rob saves $5 for every $16 he earns, he is saving the folowing franction of his income: [tex]\frac{5}{16} =0,3125=31,25\%[/tex].
  • Then if his income equals $16, he will save [tex]\$16\times{0,3125}=\$5[/tex].
  • If his income is $80, he will save [tex]\$80\times{0,3125}=\$25[/tex]
  • Another way to understand this problem would be to think that [tex]\$80=5\times{\$16}[/tex]. Then, receiving $80 is the same as receiving 5 times $16. If he saves $5 for every $16 he receives, he would save 5 times $5 = $25.

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Rewritten by : Batagu