Question

50% of all cakes. Jenny baked that week were party cakes. 1-5 we're fruit cakes, and the remainder were sponge cakes. What percentage of cakes were sponge cakes

Answer 1

I think by 1-5 you mean 1/5??

1/5 = 0.20 = 20%

50% + 20% = 70%

100-70 = 30

 so 30% were sponge cakes