蓝丝带长8米，绿丝带的长度是蓝丝带的3倍，绿丝带多少米？0P)j:|2l1y.I'd
算式：提示2s(Z1r+R)h0P)j:|2l1y.I'd
答：绿丝带(P'T-N,],U,A8X2e+A米。0P)j:|2l1y.I'd