<PRE><B>Question 465564</B>
If a,b,c combined weigh 167, we can find the average weight of the seven readings. Note that we are trying to find


*[tex \LARGE Avg = \frac {a + b + c + (a+b) + (b+c) + (c+a) + (a+b+c)}{7}]


We can collect like terms in the numerator:


*[tex \LARGE Avg = \frac{4a + 4b + 4c}{7} = \frac{4(a+b+c)}{7} = \frac{4(167)}{7} \approx 95.43]</PRE>