Question 1148626
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The sum of their ages in 2013 was 11.  So let their two ages in 2013 be x and (11-x).<br>
"In 2022, Kai Kai will be three times as old as Jia Jia was in 2013."<br>
Kai Kai's age in 2022 will be x+9; that is 3 times Jia Jia's age in 2013, which is (11-x):<br>
{{{x+9 = 3(11-x)}}}<br>
Solve using basic algebra.<br>
Then remember the question asks for their ages in 2014....<br>