Answer:
240
Explanation:
h+c=320
c=3h ( since 3 times the cheeseburger)
Now plug in 3h for C
h+3h=320 = 4h=320
Now divide 320 by 4 to get "h" alone
h=80
now plug 80 back t the eqation of c=3h
so now it is...
c=3 x 80
which is 240
so ur andswer is 240