Lindsay practices the guitar 50 minutes on Saturday and 30 minutes on most weekdays. Last week she practiced 140 minutes. How many weekdays did she practice? Write an equation in the form px+q=r to represent this problem.
What is the answer to this I am not good with px+q=r things
Wrong answer again by the robot tutor.
number of weekdays --- x
30x + 50 = 140
30x = 90
x = 3
no idea where the robot got its 4x
Mathhelper is right
Thanks 🙏
Bot is very wrong lol but yes mathhelper is correct
4x + 30 = 140
4x = 110
x = 27.5
Therefore, Lindsay practiced the guitar for 4 days and 30 minutes last week.
No problem! We can break it down step by step.
Let's represent the number of weekdays Lindsay practiced as x.
First, we know that Lindsay practices the guitar for 50 minutes on Saturday. So we can add 50 to our total practice time.
We also know she practices 30 minutes on most weekdays. Since there are 7 days in a week, we can subtract 2 days (for Saturday and Sunday) from our total number of days, which is x.
So, Lindsay practiced for a total of 50 + (30 * (x - 2)) minutes.
Now, the problem states that she practiced for a total of 140 minutes last week. So, we can set up the equation:
50 + (30 * (x - 2)) = 140
Now, to convert this equation into the form px + q = r, we can simplify it.
50 + 30(x - 2) = 140
50 + 30x - 60 = 140
30x - 10 = 140
Let's move the constant term (-10) to the other side of the equation by adding 10 to both sides:
30x = 140 + 10
30x = 150
Finally, we need to isolate x, so we divide both sides by 30:
x = 150/30
x = 5
Therefore, Lindsay practiced on 5 weekdays.