Question

Rob is saving to buy an MP3 player. For every 15 dollars he earns babysitting, he saves 6 dollars. On Saturday rob earned $75 dollars. How much did he save.

Answer 1

Rob saved $30 while he earned $75.

Explanation:

Given:

For every 15 dollars he earns babysitting, he saves 6 dollars.

For money earned = $15

Money saved = $6

We will first find the percentage amount saved by rob

Percentage of amount is calculated by dividing money saved with for money saved and then multiplied by 100.

Percentage amount saved =
`(6)/(15)*100 =40\%`

Now we need to find the amount of money save when money earned $75.

Amount of money saved can be calculate by multiplying money earned with percentile amount saved.

Framing in equation form we get;

Amount saved =
`(40)/(100)*75 =\$30`

Hence Rob saved $30 while he earned $75.