Quicker Maths
23Sep/094

The Great Pizza Deal

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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  1. (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%

  2. I solved it comes around 2.09%
    the selling price comces is $4.788
    original price is $4.88
    disount is $0.10


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