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פּוֹפּוּלָרִי Word Problems >

Five year ago Nina was twice as old as Sam. In five years she will be 1.5 times as old as Sam. How are Sam and Nina now.

פתרון

F i v e ye a r a g o N ina w a s tw i ce a s o l d a s S am . I n f i v e ye a rs s h e w i ll b e 1.5 t im es a s o l d a s S am . Ho w a re S am an d N ina n o w .

פתרון

Nina^{'} s age is : 25

Sam^{'} s age is : 15

צעדי פתרון

Translate the problem into an equation:

x - 5 = 2 (y - 5), x + 5 = 1.5 (y + 5)

x - 5 = 2 (y - 5), x + 5 = 1.5 (y + 5) : x = 25, y = 15

Nina^{'} s age is : 25

Sam^{'} s age is : 15

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