$67 profitstep-by-step explanation:
the average of three numbers is their sum, divided by 3. let x represent the profit during the third month. then the average monthly profit is
(-29 + 115 + x)/3 = 51
86 +x = 153 . . . multiply by 3, collect terms
x = 67 . . . . . subtract 86
their profit the third month was $67.
for this case, we must find the value of "x" of the following expression:
we know that
we multiply on both sides by 156.25:
thus, the value of x is 50.
the value of x is 50 and proportion equation form becomes .
as the proportion given in the question be as follows
solving the above
x = 50
therefore the value of x is 50 and proportion equation form becomes .
anyone know how to do this? ?