Carly is making a beaded corset. She's going to add 50 rows of purple beads with 20 beads per row, 40 rows of blue beads with 18 beads per row, and 80 gold beads. If beads cost $1 per 10 beads, how much do all the beads she bought cost?
First find the total number of purple beads Carly needs: 50 rows * 20 beads/row = <<50*20=1000>>1000 beads
Then find the total number of blue beads Carly needs: 40 rows * 18 beads/row = <<40*18=720>>720 beads
Then add the number of each color she needs to find the total number she needs: 1000 beads + 720 beads + 80 beads = <<1000+720+80=1800>>1800 beads
Then divide the number of beads by 10 to find the cost: 1800 beads / 10 beads/$1 = $<<1800/10=180>>180
#### 180