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Phổ biến Word Problems >

Martina is currently 14 years older than her cousin Joey. In 4 years she will be 3 times as old as Joey. Use this information to answer the following questions.

Lời Giải

M a r t ina i s c u rre n tl y 14 ye a rs o l d er t han h er co u s in J oey . I n 4 ye a rs s h e w i ll b e 3 t im es a s o l d a s J oey . U se t hi s in f or ma t i o n t o an s w er t h e f o ll o w in g q u es t i o n s .

Lời Giải

Martina^{'} s age is : 17

Joey^{'} s age is : 3

Các bước giải pháp

Translate the problem into an equation:

x + 4 = 3 (x - 14 + 4)

Giải

x, x + 4 = 3 (x - 14 + 4) : x = 17

Tìm age

Martina^{'} s age is : 17

Joey^{'} s age is : 3

Ví dụ phổ biến

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