50% of all cakes are party cakes. 1/5 were fruit. the rest were sponge, what is the percentage of sponge cakes?

Question

Mathematics

Aubrie

30 November, 18:42

50% of all cakes are party cakes. 1/5 were fruit. the rest were sponge, what is the percentage of sponge cakes?

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Lyric · Answer 1

If 1/5 of all the cakes are fruit, then 1-1/5=4/5 are sponge, which is 80/100, or 80%

if 1/5 of the party cakes are fruit, then 50% * 1/5=10% of the total cakes are fruit, so 100%-10%=90% are sponge