Comparing the above two sentences, we can see that the second 355 yuan is 355-28 1 yuan more than the first 281= 74 yuan, which means that 74 yuan has 7-5=2 basketballs.
So a basketball: 74÷2=37 yuan
A football: (28 1-37x5)÷3
=(28 1- 185)÷3
=96÷3
=32 yuan.