Question 100073
in 1 minute, the jr can do 1/50 and the sr can do 1/30 ... together they do 8/150 or 4/75


this means it takes them 75/4 minutes to do a whole labyrinth together


for 12, it would be 12(75/4) or 225 minutes


the equation is {{{x/30+x/50=12}}}