Zhang Fan has 60 denominations of ten yuan, five yuan and two yuan, with a total value of 350 yuan. The total value of two yuan and five yuan is 130 yuan. How many are there in each of the three denominations
There are (350-130) / 10 for ten yuan = 22, and there are 38 for two yuan and five yuan
Let X be binary and y be five
x+y=38
2x+5y=130
x=20,y=18
Excuse me, I'm on a mission,