Question 892489
Let {{{ t }}} = the actual sales tax
Let {{{ s }}} = the actual selling price
Let {{{ m }}} = the marked price
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(1) {{{ s = m + t }}}
(2) {{{ s + 140 = m + t + .02t }}}
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Substitute (1) into (2)
(2) {{{ m + t + 140 = m + t + .02t }}}
(2) {{{ 140 = .02t }}}
(2) {{{ t = 140/.02 }}}
(2) {{{ t = 7000 }}}
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(1) {{{ s = m + 7000 }}}
(2) {{{ s + 140 = m + 7140 }}}
(2) {{{ m = s - 7000 }}}
This is as far as I can go with it