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Jairo is 4 years older than his sister Emma. The sum of the squares of their ages is 58. How old is Emma?

Solution

Jairo is 4 years older than his sister Emma. The sum of the squares of their ages is 58. How old is Emma?

Solution

Emma^{'} s age is : 3

Solution steps

Translate the problem into an equation:

x^{2} + (x - 4)^{2} = 58

Solve for

x, x^{2} + (x - 4)^{2} = 58 : x = 7, x = - 3

Find Emma's age

: 3

Emma^{'} s age is : 3

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