Question 198921
Let {{{k}}}= Jack's age now
Let {{{n}}}= Jen's age now
given:
(1) {{{k + 2 = 2n}}}
(2) {{{k + 3n = 66}}}
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Subtract (1) from (2)
(2) {{{k + 3n = 66}}}
(1) {{{-k + 2n = 2}}}
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{{{5n = 68}}}
{{{n = 13.6}}}
Jen is 13.6 yrs old