|
Tuna |
Cheese |
Ham |
Total |
Brown |
36 |
22 |
7 |
65 |
White |
36 |
28 |
21 |
85 |
(50%=half) Half on white and half on brown bread 36+36=72 tuna.
(25%=quarter) Quarter on brown and three-quarters on brown bread 28/4+28×3/4=7+21=28 ham.
Brown + brown + 20 = 150; brown = 130/2 = 65. Brown=65, White=85, 65+85=150.
Cheese on brown = 65-(36+7)=65-43=22.
Cheese on white = 85-(36+21)=85-57=28. 22+28=50 total cheese.