Question 547852
Let {{{ a }}} = price A paid for it
B got it for {{{ a + .1a = 1.1a }}}
C got it for {{{ 1.1a + .15*1.1a = 1.265a }}}
given:
{{{ 1.265a = 25.3 }}}
{{{ a = 20 }}}
and
{{{ 1.1a = 22 }}}
A paid 20 for it
B paid 22 for it