OlympiadEasyLogic5–6
Ana is three times as old as Bruno. In 6 years she will be twice as old as he is. How old is Bruno now?
A Ana tem o triplo da idade do Bruno. Daqui a 6 anos terá o dobro da idade dele. Que idade tem o Bruno agora?
Answer options
Solution
Let Bruno be b. Then 3b + 6 = 2(b + 6), so 3b + 6 = 2b + 12 and b = 6. Check: 18 and 6 become 24 and 12.