<PRE><B>Question 1101983</B>
99 g
 
ALGEBRA, RATIOS AND PROPORTIONS:
If {{{x}}} is the answer, the ratio of grams protein per lb body weight is
{{{x/180=66/120}}}
Multiplying both sides of the equal sign times 180, we get an equivalent equation
{{{x=66*180/120}}} , whxcih doing the calculaton on the right side
simplifies to {{{x=99}}}
 
COMMON SENSE:
66 g for 120 lb is 11 g for every 20 lb.
That is 9 X (11 g) for 180 lb = 9 X (20 lb) .</PRE>