Patrick purchased some supplies for his guitar students. He bought 25 guitar picks
and 25 guitar strings since they only cost $1 more than the guitar picks. He spent
a total of $40. If c is the cost of one guitar pick, find the cost of one guitar string.
(1 point)
Let c be the cost of one guitar pick.
The cost of 25 guitar picks is 25*c.
The cost of 25 guitar strings is 25*c + $1.
So the total cost is 25*c + 25*c + $1 = $40.
Therefore, 50c + $1 = $40
50c = $39
c = $39/50
c = $0.78
The cost of one guitar string is 25*c + $1 = 25*$0.78 + $1 = $19.50 + $1 = $<<25*0.78+1=20.50>>20.50. Answer: \boxed{20.50}.