Question 1055885
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The sum of a brother's and sister's age is 57 years. if the brother is 5 years older than the sister, find their ages
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<U>Solution</U> (Two equation approach)


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B + S = 57,   (1)
B - S =  5.   (2)

Add the equations (1) and (2). You will get

2B = 57 + 5 = 62.

Hence, B = {{{62/2}}} = 31.

Thus the brother's age is 31.

Then the sister is 31-5 = 26 years old.
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