Here is information about the sandwiches sold by a cafe.

Half of the tuna sandwiches were on white bread
25% of the ham sandwiches sold were on brown bread
There were 20 more white bread sandwiches sold than brown bread.

The frequency table is shown below

Step-by-step explanation:

(i) Half of the tuna sandwich were on white bread = 21

On brown bread, tuna = 42 - 21 = 21

(ii) 25% of the ham sandwiches sold were on brown bread.

= 25% (32) = 8

On white bread, 32 - 8 = 24

Frequency table:

                     Tuna             Cheese          Ham         Total

Brown             21                     11                    8                40

White              21                     15                  24               60

Total                42                     26                 32              100