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50% of all the cakes jenny baked that week were party cakes, 1 fifth were fruit cakes, and the remainder were sponge cakes. What percentage of cakes were sponge cakes?

Respuesta :

Topmadworld
5units=50%
1 unit=50/5
         =10%
4/5 are the sponge cakes.. Which makes it 4units for the sponge cakes.
4 units= 4x10
           =40%

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