You need to develop a labor time estimate for a customer order of 20 network installations. It is estimated that the first installation will require 40 hours of labor and a learning curve of 75 percent is expected. Table 11.9 Learning Curve Coefficients 70% 75% 80% 85% 90% Unit Number Unit Time Total Time Unit Time Total Time Total Unit Time Total Time Unit Unit Total Time Time Time Time 1 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 800 1.800 2 .700 1.700 750 1.750 850 1.850 .900 1.900 568 2.268 1634 2,384 702 2.502 1773 2.623 846 2.746 4 490 2.758 562 2.946 640 3.142 1723 3.345 810 3.556 437 3.195 513 3.459 596 3.738 .686 4,031 1783 4339 6 398 3.593 475 3.934 562 4.299 657 4.688 1762 5.101 7 367 3.960 4.46 4,380 534 4.834 634 5:322 5.845 8 343 4303 222 4802 512 5.346 5.936 729 6:574 9 323 4.626 402 5.204 493 5.839 -597 6.533 716 7.290 10 306 4.932 385 5.589 .477 6.315 583 7.116 .705 7.994 11 291 5.223 370 5.958 462 6.777 570 7.686 .695 8.689 12 278 5.501 357 6.315 449 7227 558 8.244 .685 9.374 13 267 5.769 345 6.660 438 7.665 548 8.792 .677 10.052 14 257 6.026 334 6.994 428 8.092 539 9.331 .670 10.721 15 248 6.274 325 7.319 418 8.511 530 9.861 .663 11.384 16 240 6.514 316 7.635 522 10.383 656 12.040 410 8.920 402 9.322 17 233 6.747 309 7.944 515 10.898 .650 12.690 18 226 6973 .301 8.245 394 9.716 508 11.405 1644 13.334 19 220 7.192 295 8.540 388 10.104 501 11.907 639 13.974 20 214 7,407 288 8.828 381 10.485 1495 12.402 .634 14.608 21 209 7.615 283 9.111 375 10.860 490 12.892 630 15.237 22 204 7,819 277 9.388 370 11.230 484 13.376 .625 15.862 23 1199 8.018 272 9.660 364 11.594 479 13.856 621 16.483 24 .195 8.213 1267 9.928 359 11.954 475 14 331 .617 17.100 25 191 8.404 263 10.191 355 12.309 470 14.801 613 17.713 How many labor-hours are required to complete all 20 installations? I hours (Round your answer to 2 decimal places, eg,5.12.)