已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=( :)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 19:29:14
![已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=( :)](/uploads/image/z/13416339-3-9.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%EF%BC%88+%EF%BC%9A%EF%BC%89)
已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=( :)
已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=( :)
已知a:b=3/2:1.2,b:c=0.75:1/2,那么c:a=( :)
a:b=3/2:1.2=3/2:6/5=3/2*5/6=5/4
b:c=0.75/1/2=3/4*2=3/2 故c:b=2/3
(a:b):(c:b)=5/4:2/3
故 a:c=5/4*3/2=15/8
即c:a=8:15
9: 4
(a/b)*(b/c)=a/c=15/8
所以c:a=8:15