Question 887209
Algebra Question: John's age is one third of his dad's age and two fifths of his mother's age.the age difference between his parents is ten years. how old are the three respectively?
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let x=John's age
3x=dad's age
(5/2)x=mother's age
..
3x-5x/2=10
6x-5x=20
x=20
3x=60
(5/2)x=50
John's age=20
dad's age=60
mother's age=50