Question 964201
3L of water to 12L milk,
{{{12/(3+12)=12/15=4/5}}} milk.


1L of water to 10L milk,
{{{10/(11)=10/11}}} milk.


Their ratio of strengths, of the first mixture to the second mixture,
{{{(4/5)/(10/11)}}}


{{{(4*11)/(5*10)}}}


{{{(2*11)/(5*5)}}}


{{{highlight(22/25)}}}