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受欢迎的 Word Problems >

beth is 8 years older than her brother. next year she will be twice as old as her brother. how old is beth now?

解答

b e t h i s 8 ye a rs o l d er t han h er b ro t h er . n e x t ye a r s h e w i ll b e tw i ce a s o l d a s h er b ro t h er . h o w o l d i s b e t h n o w ?

解答

Beth^{'} s age is : 15

求解步骤

Translate the problem into an equation:

x + 1 = 2 (x - 8 + 1)

求解

x, x + 1 = 2 (x - 8 + 1) : x = 15

Beth^{'} s age is : 15

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