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Phổ biến Word Problems >

Father's age is 7 times as old as his son. Two years ago; father was 13 times as old as his son. What are their present ages ?

Lời Giải

F a t h e r^{'} s a g e i s 7 t im es a s o l d a s hi s so n . Tw o ye a rs a g o; f a t h er w a s 13 t im es a s o l d a s hi s so n . Wha t a re t h e i r p rese n t a g es ?

Lời Giải

Boy^{'} s age is : 4

Father^{'} s age is : 28

Các bước giải pháp

Translate the problem into an equation:

7 x - 2 = 13 (x - 2)

Giải

x, 7 x - 2 = 13 (x - 2) : x = 4

Tìm age

Boy^{'} s age is : 4

Father^{'} s age is : 28

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