Answer:
-15 minutes + (-20 minutes) = -35 minutes
Therefore, using 7 clues results in a total decrease of 35 minutes in the remaining time.
Explanation:
To determine the total change in time when using 7 clues, we need to consider the time impact of each clue and the number of clues used.
We are given that each additional clue removes 5 minutes from the remaining time. This means that the time impact of each clue is -5 minutes.
First, let's calculate the time impact of using the 3 free clues:
3 clues x (-5 minutes/clue) = -15 minutes
Using the 3 free clues results in a decrease of 15 minutes in the remaining time.
Now, let's calculate the time impact of using the additional 4 clues:
4 clues x (-5 minutes/clue) = -20 minutes
Using the additional 4 clues results in a decrease of 20 minutes in the remaining time.
To find the total change in time when using 7 clues, we add the time impact of using the 3 free clues to the time impact of using the additional 4 clues:
-15 minutes + (-20 minutes) = -35 minutes
Therefore, using 7 clues results in a total decrease of 35 minutes in the remaining time.