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Phổ biến Word Problems >

Six years ago a father was twelve times as old as his son. In three years time the father will be three times as old as his son. How old are they now?

Lời Giải

S i x ye a rs a g o a f a t h er w a s tw e l v e t im es a s o l d a s hi s so n . I n t h ree ye a rs t im e t h e f a t h er w i ll b e t h ree t im es a s o l d a s hi s so n . Ho w o l d a re t h ey n o w ?

Lời Giải

Father^{'} s age is : 30

Boy^{'} s age is : 8

Các bước giải pháp

Translate the problem into an equation:

x - 6 = 12 (y - 6), x + 3 = 3 (y + 3)

x - 6 = 12 (y - 6), x + 3 = 3 (y + 3) : x = 30, y = 8

Father^{'} s age is : 30

Boy^{'} s age is : 8

Ví dụ phổ biến

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