Percentage

If the computer is sold at a profit of 15%,the profit will be $1350 find the selling price of the computer

let the original price be x

15% of x = 1350

0.15x=1350

x=1350/0.15

Sale price will be x+1350

Let the original cost  = x    and the  profit is 15% of this= .15x  = 1350

So...original cost + .15x  = 1.15x  = selling price 

Then......

x   + 1350  = 1.15x    subtract x from both sides

1350  = .15x     divide both sides by .15

9000  = x

So.....the selling price  = $[ 9000 + 1350 ]  =  $10,350