Question 640938
Let {{{ g }}} = the price in cents of the grapefruit
Let {{{ b }}} = the price in cents of the ball
given:
(1) {{{ b + .07b = 515 - g }}}
(2) {{{ .07b = 18 }}}
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(1) {{{ 1.07b = 515 - g }}}
(2) {{{ b = 18/.07 }}}
(2) {{{ b = 257.14 }}}
and
(1) {{{ 1.07*257.14 = 515 - g }}}
(1) {{{ 275.14 = 515 - g }}}
(1) {{{ g = 515 - 275.14 }}}
(1) {{{ g = 239.86 }}}
The grapefruit is $2.40
The ball is $2.57
check:
{{{ 515 = 240 + 1.07*257 }}}
{{{ 515 = 240 + 275 }}}
{{{ 515 = 515 }}}
OK