Question 708181
{{{p}}} = average temperature at P
{{{q}}} = average temperature at Q
{{{r}}} = average temperature at R
{{{p/q=9/8}}} <--> {{{q/p=8/9}}}
{{{p/r=11/12}}}
{{{q/r=(q/p)(p/r)}}} --> {{{q/r=(8/9)(11/12)}}} --> {{{q/r=8*11/9/12}}} --> {{{q/r=2*4*11/9/3/4}}} --> {{{q/r=2*cross(4)*11/9/3/cross(4)}}} --> {{{q/r=2*11/9/3}}} --> {{{highlight(q/r=22/27)}}}
he ratio between the average temperature of Q and R is 22:27.