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Today is Varun's birthday. One year, from today he will be twice as old as he was 12 years ago. How old is Varun today ?Options 22 years20 years 25 years 27 years

Question

Today is Varun's birthday. One year, from today he will be twice as old as he was 12 years ago. How old is Varun today ?Options 22 years20 years 25 years 27 years

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Solution

Vamos resolver o problema passo a passo.

Vamos chamar a idade de Varun hoje de x x .

De acordo com o problema, daqui a um ano, Varun terá x+1 x + 1 anos.

Também sabemos que, daqui a um ano, ele será duas vezes mais velho do que era há 12 anos. Portanto, podemos escrever a seguinte equação:

x+1=2(x12) x + 1 = 2(x - 12)

Agora, vamos resolver essa equação para encontrar x x :

  1. Expanda a equação: x+1=2x24 x + 1 = 2x - 24

  2. Subtraia x x de ambos os lados: 1=x24 1 = x - 24

  3. Adicione 24 a ambos os lados: x=25 x = 25

Portanto, a idade de Varun hoje é 25 anos.

A resposta correta é: 25 anos.

This problem has been solved

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