Suppose you have 30 cds. you know that you have 11 more cds than your friend. write and solve an equation to find the number of cds your friend has.

a. n – 11 + 30 = 30; 19
b. 30 + n = 11; –19
c. 30 + 11 = n; 41
d. n + 11 = 30; 19

Let us assume the number of CDs your friend has = n
Then
Number of CDs that you have = n + 11
It is already given that the number of CDs you have = 30
Then
n + 11 = 30
n = 30 - 11
   = 19

From the above deduction, it can be easily concluded that the correct option among all the options that are given in the question is the fourth option or option "D". I hope that the answer has actually come to your desired help.