Question 1004886
Let {{{ p }}} = the price of a plain cheese pizza
Let {{{ t }}} = the price of a single topping
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(1) {{{ p + 3t = 1535 }}}
(2) {{{ p + 5t = 1795 }}} ( in cents )
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Subtract (1) from (2)
{{{ 2t = 260 }}}
{{{ t = 130 }}}
and
(1) {{{ p + 3*130 = 1535 }}}
(1) {{{ p = 1535 - 390 }}}
(1) {{{ p = 1145 }}}
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The price of a plain cheese pizza is $11.45
The price of a single topping is $1.30
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check:
(2) {{{ p + 5t = 1795 }}} 
(2) {{{1145 + 5*130 = 1795 }}} 
(2) {{{ 1145 + 650 = 1795 }}}
(2) {{{ 1795 = 1795 }}}
OK