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Maryl is 7 years older than Shaira. 5 years ago the sum of their ages was 30. How old are they now?

Soluzione

Maryl is 7 years older than Shaira. 5 years ago the sum of their ages was 30. How old are they now?

Soluzione

Maryl^{'} s age is : 23 \frac{1}{2}

Shaira^{'} s age is : 16 \frac{1}{2}

Fasi della soluzione

Translate the problem into an equation:

x - 5 + x - 7 - 5 = 30

Risolvi per

x, x - 5 + x - 7 - 5 = 30 : x = \frac{47}{2}

Trova age

Maryl^{'} s age is : 23 \frac{1}{2}

Shaira^{'} s age is : 16 \frac{1}{2}

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