The 10″ pizza sells for $ 3.99 at my favorite pizza store. The store claims they have a great deal on the large 12″ pizza, which is specially priced at $ 4.88. What is the per cent discount the store is offering?

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(10*10)Pi cost=$ 3.99

1 cost= $ 3.99/(100Pi)

(12*12)Pi cost=$ 3.99*(144Pi)/(100Pi) =$ 5.7456

discount= (5.7456-4.88)/5.7456*100 =15.0654%

the discount is of 15%

15%

I solved it comes around 2.09%

the selling price comces is $4.788

original price is $4.88

disount is $0.10