Question 426856
Let {{{a}}} = number of $5 bills
Let {{{b}}} = number of $1 bills
given:
(1) {{{ a + b = 22 }}}
(2) {{{ 5a + b = 50 }}}
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(1) {{{b = 22 - a }}}
By substitution:
(2) {{{ 5a + 22 - a = 50 }}}
{{{ 4a = 28 }}}
{{{ a = 7 }}}
and
(1) {{{ a + b = 22 }}}
{{{ b = 22 - 7 }}}
{{{ b = 15 }}}
There are 7 $5 bills and 15 $1 bills