Algebra
posted by LP on .
Mitch has 3 tests to study for on Thursday night. He needs to spend twice as much time on Science as English. He also has to study Math and he can learn that in 1/2 the time it takes to study English. He has four hours to study. What is the maximum amount of time, to the nearest tenth, of an hour, that he can study English?

let time for math be x hrs
then time for English is 2x hrs
time for science is 4x
4x+2x+x = 4
7x = 4
x = 4/7 hrs
math  .57 hrs
English  1.14 hrs
Science  2.29 hrs