 
 <prompt> Ndi nta anọ na-eme ntụrụ whiteboards atọ ụtọ nke abụọ. Kedu ihe ọ bụla ga-enye aka, n'okpuru, maka ọnụ whiteboards abụọ? <response>: ```Otu nwa nwere ike iji aka atọ nke whiteboards atọ 20*4=80 minutes.
Otu nwa nwere ike iji aka atọ nke whiteboards atọ 80*(6/3)=160 minutes.

Nke aha a: 160.``` 