father says to his son, 10 years ago i was twice of your age. What is the father's age now. ( equation = Father's age + son's age = 60
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let father age be 2*10x
so father's age is
10+2*10x=60
10+10x=60÷2
10x=30+10
x=40÷10
x=4
father age is 10*4=40
so father's age is
10+2*10x=60
10+10x=60÷2
10x=30+10
x=40÷10
x=4
father age is 10*4=40
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