<PRE><B>Question 125553</B>
This problem is not in a book it is a hand out.
If the mixture is P% gasoline, prices at $1.60 per gallon, and (100-P)% alcohol,
 priced at $1.00 per gallon, write a formula for the price of a gallon of gasahol.
:
p = per cent gasoline
:
f(p) = price of a gallon of gasahol.
:
f(p) = {{{((1.6p))/100}}} + {{{(1(100-p))/100}}}; is the gasahol formula
:
:
We can test our formula using 50% gasoline, it should be $1.30
:
f(50) = {{{((1.6(50)))/100}}} + {{{(1(100-50))/100}}}
f(50) = {{{80/100}}} + {{{50/100}}}
f(50) = .80 + .50
f(50) = $1.30</PRE>