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in 4 years, a mother will be 5 times as old as her daughter. At present, the mother is 9 times as old as the daughter. How old are the mother and daughter today.
let x represent daughters age and y the mother's age y=9x 9x+4=5(x+4) 9x+4=5x+20 4x=16 x=4 which means today the daughter is 8 years old and the mother is 40 years old
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