Mrs.roberts is 3 times as old as her son.the sum of thier ages is 48 years.how old was mrs. roberts when her son was vactions

asked Dec 15, 2019 132k views

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Mrs Roberts = x
Son = y

x = 3y
x + y = 48 Put 3y in for x
3y + y = 48
4y = 48
y = 12 Son's age.

Therefore Mrs Roberts = 3*12 = 36

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