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

### Instruction:
Four kids can wash three whiteboards in 20 minutes. How long would it take, in minutes, for one kid to wash six whiteboards?

### Response:
Let's say one kid can wash x number of whiteboards in y minutes
Then 4 kids can wash 4x number of whiteboards in y minutes
If 4 kids can wash 3 whiteboards in 20 minutes, then 4x = 3 and y = 20
Then x = 3/4 = <<3/4=.75>>.75
If one kid can wash .75 whiteboards in 20 minutes, then he can wash 6 whiteboards in 20/.75 = <<20/.75=26.67>>26.67 minutes
#### 26.67

