50克盐溶解在200克水中,盐占水的_%,盐占盐水的_%,水比盐多_%.盐比水少_%.

问题描述:

50克盐溶解在200克水中,盐占水的______%,盐占盐水的______%,水比盐多______%.盐比水少______%.

50÷200=25%
50÷(50+200)
=50÷250
=20%
(200-50)÷50
=150÷50
=300%.
(200-50)÷200
=150÷200
=75%.
即盐占水的25%,盐占盐水的20%,水比盐多300%.盐比水少75%.
故答案为:25,20,300,75.