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

### Instruction:
 Kulikuwa na watoto 40 kwenye Ziwa Pleasant. Robo ya watoto walikwenda kwenye tubing, lakini nusu tu ya wanaotubing walikwenda kwenye rafting. Watoto wangapi waliojiunga na safari ya rafting pia walikuwa kwenye tubing?


### Response:
 40/4 = <<40/4=10>>10 watoto walikwenda kwenye tubing.
10/2 = <<10/2=5>>5 watoto walikwenda kwenye rafting na tubing.