已知a:b=0.65:1.3,b:c=1又1/2:2/5求a:b:c

问题描述:

已知a:b=0.65:1.3,b:c=1又1/2:2/5求a:b:c
已知a:b=0.65:1.3,b:c=1又1/5:2/5求a:b:c上面打错了

b:c=1又1/5:2/5:c=3;0.65:1.3可推出a:b=1/2
a:b:c=3:6:2