Question

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.

Answer 1

brown=tuna21 cheese=11 ham=8 total=40

white=tuna=21 cheese=15 ham=24 total=60

Answer 2

The frequency table is shown below

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