Question 1098463
Let {{{ a }}} = the price of 1 comic
Let {{{ b }}} = the fee for 1 comic
Let {{{ c }}}  = the handling fee/order
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1st month:
(1) {{{ 5*( a + b ) + c = 19.07 }}}
2nd month:
(2) {{{ 2*( a + b ) + c = 8.72 }}}
3rd month:
(3) {{{ 6*( a + b ) + c = 22.52 }}}
May order:
(4) {{{ 3*( a + b ) + c = 12.17 }}}
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Multiply both sides of (2) by {{{ 3 }}}
and subtract (3) from (2)
(2) {{{ 6*( a + b ) + 3c = 26.16 }}}
(3) {{{ -6*( a + b ) - c - 22,52 }}}
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{{{ 2c = 3.64 }}}
{{{ c = 1.82 }}}
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(1) {{{ 5*( a + b ) + 1.82 = 19.07 }}}
(1) {{{ 5*( a + b ) = 17.25 }}}
and
(2) {{{ 2*( a + b ) + 1.82 = 8.72 }}}
(2) {{{ 2*( a + b ) = 6.9 }}}
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Multiply both sides of (2) by {{{ 2 }}}
and subtract (2) from (1)
(1) {{{ 5*( a + b ) = 17.25 }}}
(2) {{{ 4*( a + b ) = 13.8 }}}
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{{{ a + b = 3.45 }}}
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For all 48 titles ordered at the same time:
{{{ C = 48*( a + b ) + c }}}
{{{ C = 48*3.45 + 1.82 }}}
{{{ C = 165.6 + 1.82 }}}
{{{ C = 167.42 }}}
$167.42 for the order
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check:
(4) {{{ 3*( a + b ) + c = 12.17 }}}
(4) {{{ 3*3.45 + 1.82 = 12.17 }}}
(4) {{{ 10.35 + 1.82 = 12.17 }}}
(4) {{{ 12.17 = 12.17 }}}
OK
You can check (1), (2), (3)
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Note that there is no way to separate
 {{{ a }}} and {{{ b }}} to find what they are,
but you don't have to to solve the problem.
Feel free to get another opinion and
check my math