已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=?(写成最简单的整数比)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/27 08:10:21
![已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=?(写成最简单的整数比)](/uploads/image/z/12666719-47-9.jpg?t=%E5%B7%B2%E7%9F%A5a%EF%BC%9Ab%3D3%2F2%EF%BC%9A1.2%2Cb%EF%BC%9Ac%3D0.75%EF%BC%9A1%2F2%2C%E9%82%A3%E4%B9%88c%EF%BC%9Aa%3D%3F%EF%BC%88%E5%86%99%E6%88%90%E6%9C%80%E7%AE%80%E5%8D%95%E7%9A%84%E6%95%B4%E6%95%B0%E6%AF%94%EF%BC%89)
xJ@_'nXl}ݽ/PD%- [<4a$+8b&fh8(_TTr(ģ]o7 hh
oY\ޕUy?FyRML^:G AԂI-ggd֖ Me$d~C?hRF悚Mff:;~6Ǽ
eod6drQȰXDY,'^(MBv} c\lZO8˝킃xqk@@
l
X
_E
已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=?(写成最简单的整数比)
已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=?(写成最简单的整数比)
已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=?(写成最简单的整数比)
a:b==3/2:12=3:24
b:c=0.75:1/2=3:2=24:16
所以c:a=16:3
1/2
因为a:b=32:1.2,所以b=0.8a;①
又因为b:c=0.75:12,所以c:b=2:3;②
把①代入②,得,
c:0.8a=2:3,
3c=1.6a,
c:a=1.6:3,
c:a=8:15.
c/a=(c/b)*(b/a)=(0.5/0.75)/(1.2/1.5)
=(2/3)/(4/5)
=10/12
=5/6
c:a=5:6