Application of equation in grade one of junior high school, Monthly water consumption yuan / m3 The part not exceeding 6 cubic meters is 2 yuan / cubic meter The part exceeding 6 cubic meters but not exceeding 10 cubic meters is 4 yuan / cubic meter The part exceeding 10 cubic meters is 8 yuan / cubic meter (table above) If the household shared 15 cubic meters of water in March and April (the water consumption in April exceeded that in March), and paid a total water fee of 44 yuan, how many cubic meters of water did the household use in March and April?

Application of equation in grade one of junior high school, Monthly water consumption yuan / m3 The part not exceeding 6 cubic meters is 2 yuan / cubic meter The part exceeding 6 cubic meters but not exceeding 10 cubic meters is 4 yuan / cubic meter The part exceeding 10 cubic meters is 8 yuan / cubic meter (table above) If the household shared 15 cubic meters of water in March and April (the water consumption in April exceeded that in March), and paid a total water fee of 44 yuan, how many cubic meters of water did the household use in March and April?

This problem is more complicated. The following solution is for reference: let x tons of water be used in March, then (15-x) tons of water be used in April. Case 1: less than 6 tons in March, more than 6 tons and less than 10 tons in April, then the equation can be listed: 2X + 6 * 2 + 4 * [(15-x) - 6] = 44