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Popolare Word Problems >

Twelve years ago Eric’s father was seven times as old as Eric was. If Eric’s father is now 54 years old, how old is Eric now?

Soluzione

Tw e l v e ye a rs a g o E r i c ’ s f a t h er w a s se v e n t im es a s o l d a s E r i c w a s . I f E r i c ’ s f a t h er i s n o w 54 ye a rs o l d, h o w o l d i s E r i c n o w ?

Soluzione

Eric^{'} s age is : 18

Fasi della soluzione

Translate the problem into an equation:

7 (x - 12) = 54 - 12

Risolvi per

x, 7 (x - 12) = 54 - 12 : x = 18

Eric^{'} s age is : 18

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