On Thursday, Monica studied for 3 * 2 = <<3*2=6>>6 hours.
On Friday, Monica studied half as much, so 6 / 2 = <<6/2=3>>3 hours.
Till the weekend, Monica studied in total for 2 + 6 + 3 = <<2+6+3=11>>11 hours.
That means, on the weekend Monica studied the same amount of time, so in total, she studied for 11 + 11 = <<11+11=22>>22 hours.
#### 22