My gcse question for my friend plz him and me

The answer is:  "400 pizzas" .
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Explanation:
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For ham:
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= (2÷2)/(6÷2) =   ,

{Note:   Sample of "60" ;  Refer to "20" for "ham" on the table.}.
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 = 400 .

{Note:  "1200 students" at the school; as given in the problem.}.
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The answer is:  "400 pizzas".
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The assumption is that each student is gets to eat ONE WHOLE PIZZA for one's self ; or at least GAIN — or OBTAIN — ONE WHOLE PIZZA for oneself—each.   If EACH STUDENT is going to "eat less", or "obtain" less"; or "be allotted"—LESS THAN ONE WHOLE PIZZA EACH;  the  "400 pizzas" would decrease.
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{Note that there are no such specifications given in the problem; as such, I mentioned "one whole pizza each"; or "be allotted one whole pizza each" (that one could, for instance, take home the rest for ONESELF).}.
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Ais the answer for your question