Question 1044736
Let {{{ m }}} = Mary's age now
Let {{{ t }}} = Todd's age now
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(1) {{{ m = 2t }}}
(2) {{{ m+ 8 + t + 8 = 70 }}}
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(2) {{{ m + t + 16 = 70 }}}
(2) {{{ m + t = 54 }}}
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substitute (1) into (2)
(2) {{{ 2t + t = 54 }}}
(2) {{{ 3t = 54 }}}
(2) {{{ t = 18 }}}
and
(1) {{{ m = 2t }}}
(1) {{{ m = 2*18 }}}
(1) {{{ m = 36 }}}
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Mary is 36
Todd is 18
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check:
(2) {{{ m + t + 16 = 70 }}}
(2) {{{ 36 + 18 + 16 = 70 }}}
(2) {{{ 36 + 34 = 70 }}}
(2) {{{ 70 = 70 }}}
OK