1.60kg
两个男孩儿的体重比是5：4,其中较轻的男孩儿体重为48公斤.另一个男孩儿的体重是多少?
5：4＝x：48
x=60
2.24.5km
两条河流的长度比是12：7,其中较长的一条河流的长度是42公里,较短的一条河流有多长?
12：7＝42：x
x＝24.5
解答英语应用题1.The weights of two boys are in the ratio 5:4.If the
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