Question 1202875
To solve the problem, we need to use the given information to determine the amount of time John spent on English homework. 

Let's start by using fractions to represent the time John spent on each subject:

- English homework: 2/3 of total time
- Remaining time: 1/3 of total time
- Science homework: 1/2 of remaining time = 1/2 * 1/3 = 1/6 of total time
- Math homework: rest of the time = total time - (English + Science) = 1 - (2/3 + 1/6) = 1/6 of total time

We know that John spent the rest of the 20 minutes on Math homework, so we can set up an equation:

1/6 * total time = 20 minutes

Solving for total time:

total time = 20 minutes / (1/6) = 120 minutes

Now we can find out how much time John spent on English homework:

English homework = 2/3 * total time = (2/3) * 120 minutes = 80 minutes

Therefore, the answer is (4) 80 minutes.