<PRE><B>Question 12145</B>
Set up the ratio:
{{{7/(Nitrogen) = 5/(Phosphorus) = 3/(Potash) }}}


You need to solve this equation:
{{{7/35 = 5/(Phosphorus) = 3/(Potash)}}}


However, the faster way to do this is to recognize that the first denominator is 5 times the numerator.  Therefore, the other denominators will each be 5 times the respective numerators.  


Therefore, there will be 5*5 = 25 kg phosphorus and 5 *3 = 15 kg potash.  


R^2 at SCC</PRE>