Question

求解一道数学题

X占B的22.5% Y占B的10% Z占B的3% C占B的2% V占B的19%
X+Y+Z+C+V+5+2.5+8.5=B
B-N=5.5
求X Y Z C V B N分别是多少
需要解答过程。

Answer 1

解:X=22.5%B,Y=10%B,Z=3%B,C=2%B,V=19%B
得:22.5%B+10%B+3%B+2%B+19%B+5+2.5+8.5=B
56.5%B+16=B
43.5%B=16
B=36.78
X=36.78×22.5%=8.28,Y=36.78×10%=3.68,Z=36.78×3%=1.1,C=36.78×2%=0.74,V=36.78×19%=6.99
其中B-N=5.5,可得N=B-5.5=36.78-5.5=31.28
综上所得:X=8.28,Y=3.68,Z=1.1,C=0.74,V=6.99,B=36.78,N=31.28

Answer 2

X=0.225B Y=0.1B Z=0.03B C=0.02B V=0.19B
因 X+Y+Z+C+V+5+2.5+8.5=B
0.225B+0.1B+0.03B+0.02B+0.19B+5+2.5+8.5=B
0.565B+16=B
B=87/200
X=0.225B=0.225*87/200
N=B-5.5
结果竟然不是整数 每次这时候总会觉得算错了.....
其他结果依次乘下吧