From Monday to Friday, Elle practices piano for x minutes each day. So the total time she practices piano on weekdays is 5x minutes.
On Saturday, she practices piano three times as much as on a weekday, which means she practices for 3x minutes.
The total time she spends practicing piano each week is the sum of the time she practices on weekdays and on Saturday: 5x + 3x = 8x minutes.
We are given that the total time she spends practicing piano each week is 4 hours, or 240 minutes, so we can write: 8x = 240.
Dividing both sides by 8, we get: x = 30.
The value of x is 30.
#### 30
The answer is: 30
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
From Monday to Friday, Elle practices piano for x minutes. On Saturday, she practices piano three times as much as on a weekday. There is no practice on Sunday.  How many hours does Elle spend practicing piano each week?
If we know the answer to the above question is 4, what is the value of unknown variable x?

### Answer:
