A china plate at Aiden's grandmother's house is 28 years older than a silver anniversary plate. In 6 years, the china plate will be twice as old as the silver plate will be.Let 𝑆 be the current age of the silver plate. Which of the following is an expression for the current age of the china plate?ResponsesA 2𝑆+122 cap s plus 12B 2𝑆+62 cap s plus 6C 𝑆+6cap s plus 6D 𝑆−28cap s minus 28E

Maddie’s age 8 years ago when multiplied by 55 is the same as triple Maddie’s age in 2 years’ time.Solve an equation to find Maddie’s current age.

If 𝑥 represents the present age of father and 𝑦 represents the presentage of the son then the statement for ‘present age of father is 5 morethan 6 times the age of the son’ in terms of mathematical equation is

In 3 years, Jane will be 𝑦 years old. How old was she 4 years ago?A𝑦−4B𝑦−7C𝑦−3D𝑦+1E𝑦−1

26. (单选题)一个程序根据输入的年份和月份计算该年中该月的天数，输入参数包括年份（正整数）、月份（用1-12表示）。若用等价类划分方法测试，则_____不是一个进行合适的测试用例（分号后表示测试的输出）。A. （2013,1；31）B. （0,1；‘错误’）C. （0,13；‘错误’）D. （2000,-1；‘错误’）

Michael is 6 times as old as his granddaughter Lauraa. If Laura’s present age is x years, write down in terms of x the age of Michael in 15 years time.b. In 15 years time, Michael will be 3 times as old as Laura. Write an equation in x and hence findtheir present ages.