明明买了6本练习本,兰兰买了3本同样的练习本,明明比兰兰多花了1.35元.每本练习本多少元?明明和兰兰买练习本共花了多少钱?

问题描述:

明明买了6本练习本,兰兰买了3本同样的练习本,明明比兰兰多花了1.35元.每本练习本多少元?明明和兰兰买练习本共花了多少钱?

6-3=3
1.35除以3=0.45
6乘以0.45+3乘以0.45=4.05每本练习本多少元?明明和兰兰买练习本共花了多少钱。会采纳快!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!每本0.45元,总共4.05元