 
 <translate> 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. <hau> Tawagar masu kashe gobara 5 tare da bututu na iya isar da 5 * 20 = galan 100 na ruwa a minti daya. Don isar da galan 4000, wannan ƙungiyar za ta ɗauki 4000 / 100 = mintuna 40 don kashe wutar. Amsar ita ce: 40. 