SOLUTION: The problem is: A student sold his car for $4680. He made a 20% profit. What is the original price of the vehicle. I know the answer is $3900 but I can't understand how they com

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: The problem is: A student sold his car for $4680. He made a 20% profit. What is the original price of the vehicle. I know the answer is $3900 but I can't understand how they com      Log On


   

Question 100281: The problem is:
A student sold his car for $4680. He made a 20% profit. What is the original price of the vehicle. I know the answer is $3900 but I can't understand how they come up with that answer.I came up with $3744 the first time I tried it but that is figuring the increase on the smaller number. HELP!!!
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
(Original price)+ (original price)(.20)=$4,680 [solve for the "orginal price"]
x+(x)(.20)=4680
x+.20x=4680
1.20x=4680
1.20x/1.20=4680/1.20
x=$3,900
.
Checking:
$3900 + (3900)(.20)=$4,680
$4,680=$4,680 [checks out]