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Phổ biến Word Problems >

the combined ages of mary and jane are 42 years. four years from now, mary's age will be twice that of jane. what is jane's present age?

Lời Giải

t h e co mbin e d a g es o f ma ry an d jan e a re 42 ye a rs . f o u r ye a rs f ro m n o w, ma r y^{'} s a g e w i ll b e tw i ce t ha t o f jan e . w ha t i s jan e^{'} s p rese n t a g e ?

Lời Giải

Jane^{'} s age is : 19

Các bước giải pháp

Translate the problem into an equation:

2 (x + 4) = 42 + 4

Giải

x, 2 (x + 4) = 42 + 4 : x = 19

Jane^{'} s age is : 19

Ví dụ phổ biến

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