 
<translate> Otu ìgwè nke ndị ọrụ mgbanyụ ọkụ 5 nwere hoses pụrụ ịnapụta galọn mmiri 5 * 20 = 100 n'otu minit. Iji weta galọn 4000, ndị otu a ga-ewe 4000 / 100 = nkeji 40 iji gbanyụọ ọkụ ahụ. Azịza ya bụ: 40. <eng> A team of 5 firefighters with hoses can deliver 5 * 20 = 100 gallons of water per minute. To deliver 4000 gallons, this team will take 4000 / 100 = 40 minutes to extinguish the fire.
The answer: 40. 