Question

所以我正在使用双变量。我只需要帮助弄清楚如何将它们加在一起，然后从答案中拿出12％。

public class Hello {
//c
    public static void main(String[ ] args) {
        first_number = 10.5;
        second_number = 20.8;
        answer = first_number + second_number;

        System.out.println("Additional Total="+ answer-12%);
    }
}

Answer 1

获得总数的88％

System.out.println("Additional Total = " + answer * .88);

Answer 2

将总和乘以(1 - 0.12)

双变量加，然后减去12％

2 个答案: