Welll let's work the problem out
Mr. Rodriguez goes first since his time is already out there
Mr.Rodriguez gives out 35 minutes of homework
Since Mr.Beach gives out 10 minutes less than Mr.Rodriguez, than Mr.Beach gives out 25 minutes of homework
And if Mr.Johnson gives out twice as much as HOMEWORK as Mr,Beach, who gives 50 minutes of HOMEOWRK.
(Anytime you have problems like these, always work from bottom to up, it's an easy trick)
Then when you add al their time together
35+25+50=
110 minutes altogether by all the three teachers
Hoped this helped!