Can anybody tell me the answer

42 tuna sandwiches, half on white, so 21 on white.  Leaves 21 on brown.

25% of 32 ham sandwiches on brown, so 8 ham on brown.  Leaves 24 ham on white.

20 more white than brown  total,

w = b + 20

w + b = 100

Adding

2w = 120

w = 60

b = 40

Cheese on brown = 40 - 21 - 8 = 11

cheese on white = 60 - 21 - 24 = 15

      T   C   H  Tot

B     21  11   8  40  

W    21  15 24 60

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.