Answer: 2t - 20
Explanation:
Jojo spends t minutes doing homework.
He then spends 20 minutes less than twice that amount of time doing homework.
For homework therefore, let us breakdown the time spent:
- Spends twice the amount of time = 2t
- Spends 20 minutes less than twice = 2t - 20
When doing homework, Jojo therefore spends:
= 2t - 20