Question 1083760
Let {{{ s }}} = Sam's age now
Let {{{ b }}} = Mr. B's age now
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(1) {{{ b = 3s }}}
(2) {{{ b - s = 22 }}}
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Substitute (1) into (2)
(2) {{{ 3s - s = 22 }}}
(2) {{{ 2s = 22 }}}
(2) {{{ s = 11 }}}
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(1) {{{ b = 3s }}}
(1) {{{ b = 3*11 }}}
(1) {{{ b = 33 }}}
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Sam is 11
Mr B is 33
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check:
(2) {{{ b - s = 22 }}}
(2) {{{ 33 - 11 = 22 }}}
(2) {{{ 22 = 22 }}}
OK