The number of female workers in the factories F1 and F2 in different days ⇒ Day 1 = 280 + 186 = 466 ⇒ Day 2 = 262 + 212 = 474 ⇒ Day 3 = 314 + 224 = 538 ⇒ Day 4 = 328 + 232 = 560 ⇒ Day 5 = 336 + 285 = 621 ⇒ Day 6 = 444 + 272 = 716 ∴ The second highest is day 5 (D5).