How many DVDs can you buy for a gift certificate worth $100? How much money will vou have left over?
Conversion factor: $8 per DVD Show all work using dimensional analysis
To find out how many DVDs you can buy with a $100 gift certificate, use dimensional analysis.
1 gift certificate = $100
Conversion factor: $8 per DVD
To find out the number of DVDs you can buy, divide the value of the gift certificate by the cost per DVD:
$100 / $8 per DVD = 12.5 DVDs
Since you can't buy a fraction of a DVD, you have enough money to buy 12 DVDs with the gift certificate.
To find out how much money you will have left over, subtract the cost of the DVDs from the value of the gift certificate:
$100 - ($8 per DVD * 12 DVDs) = $100 - $96 = $4
You will have $4 left over.
To calculate how many DVDs you can buy with a gift certificate worth $100 using dimensional analysis, we can set up a conversion factor.
Conversion factor: $8 per DVD.
To set up the conversion factor, we can write it as:
$8/DVD
We can then multiply the value of the gift certificate by the conversion factor:
$100 * (1 DVD/$8) = $100 * (1/8) = $12.50 DVDs
Therefore, you can buy 12 DVDs with a gift certificate worth $100.
To calculate how much money will be left over, we can subtract the total cost of the DVDs from the value of the gift certificate:
$100 - ($8/DVD * 12 DVDs) = $100 - ($8 * 12) = $100 - $96 = $4
So, you will have $4 left over.