Question 1101343
Let {{{ a }}} = Mr Abu's age now
Let {{{ b }}} = Kofi's age now
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(1) {{{ a = 3b }}}
(2) {{{ ( a - 8 ) + ( b - 8 ) = 48 }}}
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(2) {{{ a + b - 16 = 48 }}}
(2) {{{ a + b = 64 }}}
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Substitute (1) into (2)
(2) {{{ 3b + b = 64 }}}
(2) {{{ 4b = 64 }}}
(2) {{{ b = 16 }}}
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Kofi's age is presently 16
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check:
(1) {{{ a = 3*16 }}}
(1) {{{ a = 48 }}}
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(2) {{{ ( a - 8 ) + ( b - 8 ) = 48 }}}
(2) {{{ ( 48 - 8 ) + ( 16 - 8 ) = 48 }}}
(2) {{{ 40 + 8 = 48 }}}
(2) {{{ 48 = 48 }}}
OK