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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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解答英语应用题
1.The weights of two boys are in the ratio 5:4.If the weight of the thinner boy is 48kg,what is the weight of the other?
2.The lengths of two rivers are in the ratio 12:7.The length of the longer one is 42km.Find the length of the shorter one.
解答英语应用题1.The weights of two boys are in the ratio 5:4.If the
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