Just solve until the answers are the same
25 times x plus 30 for John
15 times x plus 50 for Mary
True , is the answer ! :)
Answer:
that's alot but no english speak english it is long
50% is equal to 5/10 so 5/10 were party cakes 1/5x2=2/10 so 2/10 were fruit cakes 5/10+2/10=7/10 so 10/10 which is 100% of all cakes 10/10-7/10=3/10 so 3/10 of the cakes were sponge cakes.
