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05-08-2016
Mathematics

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james is four times as old as judy .in two years ,james will be twice as old as judy later on . how old is james and judy now

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Ckaranja Ckaranja

15-08-2016

Let Judy be j years old;
Then James is 4j
In two years time
Judy=(j+2) years
James=(4j+2) years
James will twice as old;
4j+2=2(j+2)
4j+2=2j+4
4j-2j=4-2
2j=2
j=1
Judy is 1 year old and James is 4 years old

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