5: 2.8÷0.5=5.6(米)
6: 35÷2.5=14(元)
48.3÷(3+0.5)
= 48.3÷3.5
= 13.8(元)
14>13.8,所以第二种油便宜一些
7: (50-18.5)÷4.5
= 31.5÷4.5
= 7(元)
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5: 2.8÷0.5=5.6(米)
6: 35÷2.5=14(元)
48.3÷(3+0.5)
= 48.3÷3.5
= 13.8(元)
14>13.8,所以第二种油便宜一些
7: (50-18.5)÷4.5
= 31.5÷4.5
= 7(元)
http://m.ksjqmj.com/wunianjidaan/2323.html
推荐访问