Question 730885
P's bird = {{{ d }}}
C.H.'s bird = {{{ 4d }}}
{{{pi}}}-rate's bird = {{{ (5/8)*4d }}}
{{{ d + 4d + (5/8)*4d = 225 }}} cm
{{{ 5d + (5/2)*d = 225 }}}
{{{ (15/2)*d = 225 }}}
{{{ d = (2/15)*225 }}}
{{{ d = 30 }}}
P's bird is 30 cm tall
check:
C.H.'s bird = {{{ 4*30 }}}
C.H.'s bird = {{{ 120 }}} cm
{{{pi}}}-rate's bird = {{{ (5/8)*4*30 }}}
{{{pi}}}-rate's bird = {{{ 75 }}}
{{{ 30 + 120 + 75 = 225 }}}
OK