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פּוֹפּוּלָרִי Word Problems >

Ten years ago, Sarah was thrice as old as Mark. If Sarah is currently 40 years old, how old is MArk?

פתרון

T e n ye a rs a g o, S a r ah w a s t h r i ce a s o l d a s M a r k . I f S a r ah i s c u rre n tl y 40 ye a rs o l d, h o w o l d i s M A r k ?

פתרון

Mark^{'} s age is : 20

צעדי פתרון

Translate the problem into an equation:

3 (x - 10) = 40 - 10

3 (x - 10) = 40 - 10, x

פתור בשביל:

x = 20

Mark^{'} s age is : 20

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