Question 1057600
Let {{{ a }}} = Linda's age now
Let {{{ b }}} = Jennifer's age now
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(1) {{{ a + b = 25 }}}
(2) {{{ a - 18 = 2*( b - 18 ) }}} 
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(2) {{{ a - 18 = 2b - 36 }}}
(2) {{{ -a + 2b = 18 }}}
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Add (1) and (2)
(1) {{{ a + b = 25 }}}
(2) {{{ -a + 2b = 18 }}}
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{{{ 3b = 43 }}}
{{{ b = 14.333 }}}
and
(1) {{{ a + 14.333 = 25 }}}
(1) {{{ a = 10.667 }}}
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Linda is 10 yrs 8 mos
Jennifer is 14 yrs 4 mos
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check:
(2) {{{ a - 18 = 2*( b - 18 ) }}} 
(2) {{{ 10.667 - 18 = 2*( 14.333 - 18 ) }}} 
(2) {{{ -7.333 = 2*(-3.667 ) }}}
(2) {{{ -7.333 = -7.333 }}}
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really strange numbers. check my math and
get a 2nd opinion, too.