Question 787568
Let {{{ p }}} = Pam's age now
Let {{{ j }}} = Jim's age now
-----------------------
(1) {{{ p = j - 8 }}}
(2) {{{ j + 1 = 3*( p - 5 ) }}}
------------------
(2) {{{ j + 1 = 3p - 15 }}}
(2) {{{ 3p - j = 16 }}}
and
(1) {{{ -p + j = 8 }}}
----------------
Add (1) and (2)
{{{ 2p = 24 }}}
{{{ p = 12 }}}
and
(1) {{{ p = j - 8 }}}
(1) {{{ 12 = j - 8 }}}
(1) {{{ j = 20 }}}
-------------
Jim is 20 and Pam is 12
check:
(2) {{{ j + 1 = 3*( p - 5 ) }}}
(2) {{{ 20 + 1 = 3*( 12 - 5 ) }}}
(2) {{{ 21 = 3*7 }}}
(2) {{{ 21 = 21 }}}
OK