设 x 小时后池中还有14.6 吨水
12.8x + 11.6x + 14.6 = 100
(12.8 + 11.6)x = 100 - 14.6
24.4x = 85.4
x = 85.4 ÷ 24.4
x = 3.5
答:3.5 小时后池中还有14.6 吨水.
设 x 小时后池中还有14.6 吨水
12.8x + 11.6x + 14.6 = 100
(12.8 + 11.6)x = 100 - 14.6
24.4x = 85.4
x = 85.4 ÷ 24.4
x = 3.5
答:3.5 小时后池中还有14.6 吨水.