Question 1147570
ONE tub



6 minutes hot water in:  {{{6(1/15)}}}



3 minutes hot and cold water in:  {{{3(1/15+1/12)}}}



x minutes hot, cold, and opened drain plug:  {{{(1/15+1/12-1/10)x}}}



{{{6(1/15)+3(1/15+1/12)+(1/15+1/12-1/10)x=1}}}
Simplify and solve for x.