Question 245725
yes turkey burgers + hamburgers=21
but we also know that  since the poundage was the same
number of turkey burgers times 1/4 = number of hamburgers times 1/3
t/4=h/3
solve for t
multiply by both sides by 4
t=4h/3
t+h=21
4h/3+h=21
multiply both sides by 3
4h+3h=63
combine
7h=63
divide both sides by 7
h=9
t+h=21
t=21-h
t=12
check

t/4=h/3
12/4=9/3
3=3
ok