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Noy is twice as old as Kris. In eight years, Noy will be four years older than Kris. Find their present ages.

Soluzione

Noy is twice as old as Kris. In eight years, Noy will be four years older than Kris. Find their present ages.

Soluzione

Kris^{'} s age is : 4

Noy^{'} s age is : 8

Fasi della soluzione

Translate the problem into an equation:

2 x + 8 - 4 = x + 8

Risolvi per

x, 2 x + 8 - 4 = x + 8 : x = 4

Trova age

Kris^{'} s age is : 4

Noy^{'} s age is : 8

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