买2本数学书和3本生字本,一共用去2.52元,每本数学书比生字本贵0.36元,
问题描述:
买2本数学书和3本生字本,一共用去2.52元,每本数学书比生字本贵0.36元,
答
2.52-(0.36×2)=2.5-0.72=1.8( 元) 1.8/5=0.36(元) 0.36×2=0.72(元) 答:每本数学本要0.72元,生子本要0.36元
买2本数学书和3本生字本,一共用去2.52元,每本数学书比生字本贵0.36元,
2.52-(0.36×2)=2.5-0.72=1.8( 元) 1.8/5=0.36(元) 0.36×2=0.72(元) 答:每本数学本要0.72元,生子本要0.36元