← 比・比例・速率与单位换算 · 题库挑战

ONE QUESTION, ONE STEP

ZX-332005EB57

2023年12月A卷 · 第 22 题

2023年12月A卷 · 原库模块 2 · Q22 原库参考解析

A 9-pound cat eats two types of canned cat food: chicken-flavored and duck-flavored. The recommended amount of chicken-flavored food is 2.25 cans per 8 pounds of a cat's weight per day. The recommended amount of duck-flavored food is 0.75 cans per 5 pounds of a cat's weight per day. If c is the number of chicken-flavored cans and d is the number of duck-flavored cans a 9-pound cat eats in one day, which equation describes all the possible values of c and d for the cat to eat the recommended amount of food based on its weight?
选择答案