Answer:
The expression would be 13t.
Step-by-step explanation:
We know that:
- Each set takes t minutes to be done.
- Edson does three types of exercises with different sets: 6, 3 and 4.
Basically, we have to multiply each set by t minutes.
We have:
- 6 sets of push-ups: t + t + t + t + t + t = 6t
- 3 sets of pull-ups: t + t + t = 3t
- 4 sets of sit-ups: t + t + t + t = 4t
The total amount of time considering all sets is 6t + 3t + 4t = 13t. In other words, Edson did 13 sets, if one set takes t minutes, then the 13 sets takes 13t minutes.