 
 <translate> Each of the two hoses delivers water at a rate of 2 gallons per minute, for a combined total of 2 * 2 = 4 gallons of water per minute. The other two hoses each deliver water at a rate of 3 gallons per minute, for a combined total of 2 * 3 = 6 gallons of water per minute. Thus, all four hoses deliver a combined total of 4 + 6 = 10 gallons of water per minute. With a volume of 15,000 gallons, it would take 15,000 / 10 = 1500 minutes to fill the pool. Converting to hours, it will take 1500 / 60 = 25 hours to fill the pool.
The final answer: 25. <hau> Kowane ɗayan bututun biyu yana ba da ruwa a cikin adadin galan 2 a minti daya, don jimlar jimlar 2 * 2 = galan 4 na ruwa a minti daya. Sauran bututun guda biyu kowannensu yana ba da ruwa da adadin galan 3 a minti daya, don jimlar jimlar 2 * 3 = galan 6 na ruwa a minti daya. Saboda haka, duk bututun guda huɗu suna ba da jimillar galan 4 + 6 = 10 na ruwa a minti ɗaya. Tare da girman galan 15,000, zai ɗauki mintuna 15,000 / 10 = 1500 don cika tafkin. Idan aka mayar da shi zuwa awanni, zai ɗauki 1500 / 60 = awanni 25 don cika tafkin. Amsar ita ce: 25. 