Ionitaalina1974ask
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Rick îs 10 years older tnan his brother Jeff În 4 years, Rick will be twice as old as Jeff. ​

Răspuns :

Răspuns:

Rick = Jeff + 10

Rick + 4  = (Jeff + 4 ) *2 => Rick = 2 * Jeff + 8 - 4 => Rick = 2*Jeff + 4

So Jeff + 10 = 2 * jeff + 4 = > Jeff = 10 - 4 = 6 years

And Rick is 16

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