Question 650493
Jake is five years older than laura. Four years ago jake was twice as old as laura was then. How old is jake now?
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let x= jake's age now
x-5=laura's age now
four years ago:
jake's age=x-4
laura's age=x-5-4=x-9
(x-4)=2(x-9)
x-4=2x-18
-x=-14
x= 14 
jake's age now=14