Question 1132725
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Finding the answer using formal algebra is good practice; but this kind of problem can be solved mentally with a bit of simple arithmetic.<br>
If the sum of their ages in 5 years will be 55, then the sum of their ages now is 45.<br>
Then if Joel is twice as old as Kayla and the sum of their ages is 45, then Joel is 30 and Kayla is 15.