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Phổ biến Word Problems >

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

Lời Giải

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 hi s so n w a s t h e n . Ho w o l d i s T o m n o w ?

Lời Giải

Tom^{'} s age is : x

Các bước giải pháp

Translate the problem into an equation:

4 (x - 3) = 35 - 3

Giải

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

Tìm Tom's age

: x

Tom^{'} s age is : x

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