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受欢迎的 Word Problems >

Phil is Tom's father. Phil is 35 years old. Three years ago, Phil was four times as old as Tom was then. How old is Tom now?

解答

P hi l i s T o m^{'} s f a t h er . P hi l i s 35 ye a rs o l d . T h ree ye a rs a g o, P hi l w a s f o u r t im es a s o l d a s T o m w a s t h e n . Ho w o l d i s T o m n o w ?

解答

Tom^{'} s age is : 11

求解步骤

Translate the problem into an equation:

4 (x - 3) = 35 - 3

求解

x, 4 (x - 3) = 35 - 3 : x = 11

Tom^{'} s age is : 11

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