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פּוֹפּוּלָרִי Word Problems >

In 3 years, Toni will be 3 times as old as his sister Alex. A year ago, Toni was 7 times as old as Alex. How old are they now?

פתרון

I n 3 ye a rs, T o ni w i ll b e 3 t im es a s o l d a s hi s s i s t er A l e x . A ye a r a g o, T o ni w a s 7 t im es a s o l d a s A l e x . Ho w o l d a re t h ey n o w ?

פתרון

Toni^{'} s age is : 15

Alex^{'} s age is : 3

צעדי פתרון

Translate the problem into an equation:

x + 3 = 3 (y + 3), x - 1 = 7 (y - 1)

x + 3 = 3 (y + 3), x - 1 = 7 (y - 1) : x = 15, y = 3

Toni^{'} s age is : 15

Alex^{'} s age is : 3

דוגמאות פופולריות

Cody is twice as old as Evan and five years ago the sum of their age was 11. Find the age of each boy now.Cody is 2 times as old as Lacy. 10 years from now the sum of their age will be 62. How old are they now?Logan is 32 years old. How old is the nephew?Diane is 23 years older than her daughter Amy. In 6 years, Diane will be twice as old as Amy. How old are they now?Pamela's age is two times Jiri's age. The sum of their ages is 15. What is Jiri's age?