帮我翻一下这2段英文The weights of two boys are in the ratio 5:4.If th
帮我翻一下这2段英文
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?然后帮我做下这道题
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. 然后再帮我做下这道题