Question 1028993
Let {{{ J }}} = original amount Jenny has
Let {{{ k }}} = original amount Kristy has
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(1) {{{ j = 2k }}}
(2) {{{ k + 250 = 3j }}}
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Substitute (1) into (2)
(2) {{{ k + 250 = 3*2k }}}
(2) {{{ k + 250 = 6k }}}
(2) {{{ 5k = 250 }}}
(2) {{{ k = 50 }}}
and
(1) {{{ j = 2k }}}
(1) {{{ j = 2*50 }}}
(1) {{{ j = 100 }}}
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Originally,
Jenny had $100
Kristy had $50
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check:
(2) {{{ k + 250 = 3j }}}
(2) {{{ 50 + 250 = 3*100 }}}
(2) {{{ 300 = 300 }}}
OK