You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
|
#include <bits/stdc++.h>
|
|
|
|
|
|
|
|
|
|
|
|
using namespace std;
|
|
|
|
|
|
/*
|
|
|
|
|
|
一批食物可供3个牛4个羊吃14天，或供4个牛15个羊吃7天，
|
|
|
|
|
|
请问这批食物可供6个牛与7个羊吃多少天？
|
|
|
|
|
|
|
|
|
|
|
|
(3x+4y)*14=(4x+15*y)*7
|
|
|
|
|
|
42x+56y=28x+105y
|
|
|
|
|
|
14x=49y
|
|
|
|
|
|
2x=7y
|
|
|
|
|
|
|
|
|
|
|
|
假设牛每天吃7,羊每天吃2可以求的假设总量（3*7+4*2）*14=29*14
|
|
|
|
|
|
根据6*7+7*2得出六头牛与7只羊每天吃草56
|
|
|
|
|
|
29*14/56=29/4=7.25天。
|
|
|
|
|
|
*/
|
|
|
|
|
|
int main() {
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
