Write and equation to match the problem situation below.
Callie has 4 rimes as many CDs as she has DVDs. She has a total of 60 CDs and DVD. How many dvds, d, does callie have?
d = number of DVDs
4d = number of CDs
d + 4d = 60
5d = 60
d = ?
12
Correct !
Good job :)
To write an equation for this problem, we can first let "d" represent the number of DVDs Callie has.
Since Callie has 4 times as many CDs as DVDs, we can say that the number of CDs she has is 4 times the number of DVDs. Therefore, the equation will be:
Number of CDs = 4 * Number of DVDs
Given that the total number of CDs and DVDs combined is 60, we can write another equation:
Number of CDs + Number of DVDs = 60
Now we can substitute the first equation into the second equation:
4 * Number of DVDs + Number of DVDs = 60
Simplifying the equation:
5 * Number of DVDs = 60
To solve for the number of DVDs, we can divide both sides of the equation by 5:
Number of DVDs = 60 / 5
Number of DVDs = 12
So, Callie has 12 DVDs.