The price of 5 kilograms of premium fertilizer is the same as the price of 10 kilograms of regular fertilizer. If the price of premium fertilizer is y cents per kilogram more than the price of regular fertilizer, what is the price, in cents, per kilogram of premium fertilizer? Pick one:
A) y/30 B) 5/6*y C) 6/5*y D) 2y E) 6y
Usingpfor premium andrfor regular, I got two equations from the question stem:   5p = 10r and p = r+y   Substitute for p: 5(r+y) = 10r   2yistribute: 5r + 5y = 10r   Subtract 5r from both sides: 5y 5  + 5= 
<gadget id="calculator">5  + 5</gadget>
<output>10</output>
10r   Subtract 5r from both sides: 5y= 5r   Plug back into the first equation: 5p = 10(y)   2yistribute: 5p = 10y   2yivide both sides by 5: p = 2y   The answer is 2y.
<result>D</result>
The price of 5 kilograms of premium fertilizer is the same as the price of 10 kilograms of regular fertilizer. If the price of premium fertilizer is y cents per kilogram more than the price of regular fertilizer, what is the price, in cents, per kilogram of premium fertilizer?