Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Nancy and Rose are making bracelets, and there are eight beads in each bracelet.  Nancy has 40 metal beads and 20 more pearl beads. Rose has 20 crystal beads and twice as many stone beads as crystal beads. How many bracelets can Nancy and Rose make?

### Response:
 Nancy ana vito vya lulu 40 + 20 = <<40+20=60>>60.
Hivyo, Nancy ana jumla ya vito 40 + 60 = <<40+60=100>>100.
Rose ana vito vya mawe mara mbili ya vito vya kioo, hivyo ana vito vya mawe 2 x 20 = <<2*20=40>>40.
Hivyo, Rose ana jumla ya vito 20 + 40 = <<20+40=60>>60.
Hivyo, Nancy na Rose wana jumla ya vito 100 + 60 = <<100+60=160>>160.
Hivyo, wanaweza kutengeneza vikuku 160/8 = <<160/8=20>>20.