Johan practices the drums for 45 minutes on Saturday and 25 minutes on most weekdays. Last week he practiced 120 minutes. How many weekdays did he practice? Write an equation in the
form of px + q = r to represent this problem. (3 points)
Let x be the number of weekdays Johan practiced.
The time Johan practiced on weekdays is 25x minutes.
The total time Johan practiced is 45 + 25x minutes.
We know that the total time Johan practiced last week is 120 minutes.
So, 45 + 25x = 120.
Subtracting 45 from both sides, we get 25x = 75.
Dividing both sides by 25, we get x = <<3=3>>3.
So, Johan practiced on 3 weekdays.
Therefore, the equation in the form of px + q = r is 25x + 45 = 120. Answer: \boxed{25x + 45 = 120}.
To find out the number of weekdays Johan practiced, we can set up the equation:
px + q = r
Where:
p = duration of practice on most weekdays (25 minutes)
x = number of weekdays practiced
q = duration of practice on Saturday (45 minutes)
r = total duration of practice (120 minutes)
Substituting the given values, the equation becomes:
25x + 45 = 120
To find the number of weekdays Johan practiced, we need to subtract the time he practiced on Saturday from the total practice time in a week.
Let's assume the number of weekdays Johan practiced is represented by "x".
Given:
Practice time on Saturday = 45 minutes
Practice time on weekdays = 25 minutes
Total practice time for the week = 120 minutes
We can now set up an equation in the form of px + q = r:
25x + 45 = 120
Here, "p" represents the practice time on weekdays (25 minutes), "x" represents the number of weekdays Johan practiced, "q" represents the practice time on Saturday (45 minutes), and "r" represents the total practice time for the week (120 minutes).