Answer :
The pizzeria that uses greater ratio of parmesan to mozzarella is Mario's Pizza .
In the question ,
it is given that
Tony's Pizza uses 1 part of parmesan to 8 part of mozzarella
which can be represented by 1/8 = 0.125
and Mario's pizza uses 2 part of parmesan to 10 part of mozzarella
which can be represented by 2/10 = 1/5 = 0.2
From above we can see that 0.2 > 0.125
So , Mario's Pizza has greater ratio of parmesan to mozzarella
Therefore , The pizzeria that uses greater ratio of parmesan to mozzarella is Mario's Pizza .
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