28 people buy cola, 3 Coke caps can change a bottle of Coke, then how many bottles of cola __java programming basics

Topic

28 people buy cola, 3 Coke bottle caps can change a bottle of Coke, then how many bottles of Coke to buy, enough 28 people to drink.

If it's 50 people, how many bottles of cola do you need to buy? (Need to write analysis ideas)

public class Test {public
static void Main (string[] args) {
	int a= 28;//numbers
	int exchage =a/3;//The number of bottles to swap
	Syst Em.out.println (a-exchage); The total number of bottles that can change cola, that is, the number of bottles to buy,
	}