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受欢迎的 Word Problems >

amy is 9 years older than beth. the product of their ages is 630. what is their combined total age

解答

am y i s 9 ye a rs o l d er t han b e t h . t h e p ro d u c t o f t h e i r a g es i s 630. w ha t i s t h e i r co mbin e d t o t a l a g e

解答

Amy^{'} s age is : 30

Beth^{'} s age is : 21

求解步骤

Translate the problem into an equation:

x (x - 9) = 630

求解

x, x (x - 9) = 630 : x = 30, x = - 21

找到 age

Amy^{'} s age is : 30

Beth^{'} s age is : 21

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