The 8th unit of a 13-unit job took eight hours to complete. The 9th unit has been worked on for four hours but is not yet finished. Use the following table for calculation. Learning curve coefficients

	70%	75%	80%	85%	90%
Unit Number	Unit Time	Total Time	Unit Time	Total Time	Unit Time	Total Time	Unit Time	Total Time	Unit Time	Total Time
1	1.000		1.000		1.000		1.000		1.000		1.000		1.000		1.000		1.000		1.000
2	0.700		1.700		0.750		1.750		0.800		1.800		0.850		1.850		0.900		1.900
3	0.568		2.268		0.634		2.384		0.702		2.502		0.773		2.623		0.846		2.746
4	0.490		2.758		0.562		2.946		0.640		3.142		0.723		3.345		0.810		3.556
5	0.437		3.195		0.513		3.459		0.596		3.738		0.686		4.031		0.783		4.339
6	0.398		3.593		0.475		3.934		0.562		4.299		0.657		4.688		0.762		5.101
7	0.367		3.960		0.446		4.380		0.534		4.834		0.634		5.322		0.744		5.845
8	0.343		4.303		0.422		4.802		0.512		5.346		0.614		5.936		0.729		6.574
9	0.323		4.626		0.402		5.204		0.493		5.839		0.597		6.533		0.716		7.290
10	0.306		4.932		0.385		5.589		0.477		6.315		0.583		7.116		0.705		7.994
11	0.291		5.223		0.370		5.958		0.462		6.777		0.570		7.686		0.695		8.689
12	0.278		5.501		0.357		6.315		0.449		7.227		0.558		8.244		0.685		9.374
13	0.267		5.769		0.345		6.660		0.438		7.665		0.548		8.792		0.677		10.052
14	0.257		6.026		0.334		6.994		0.428		8.092		0.539		9.331		0.670		10.721
15	0.248		6.274		0.325		7.319		0.418		8.511		0.530		9.861		0.663		11.384
16	0.240		6.514		0.316		7.635		0.410		8.920		0.522		10.383		0.656		12.040
17	0.233		6.747		0.309		7.944		0.402		9.322		0.515		10.898		0.650		12.690
18	0.226		6.973		0.301		8.245		0.394		9.716		0.508		11.405		0.644		13.334
19	0.220		7.192		0.295		8.540		0.388		10.104		0.501		11.907		0.639		13.974
20	0.214		7.407		0.288		8.828		0.381		10.485		0.495		12.402		0.634		14.608
21	0.209		7.615		0.283		9.111		0.375		10.860		0.490		12.892		0.630		15.237
22	0.204		7.819		0.277		9.388		0.370		11.230		0.484		13.376		0.625		15.862
23	0.199		8.018		0.272		9.660		0.364		11.594		0.479		13.856		0.621		16.483
24	0.195		8.213		0.267		9.928		0.359		11.954		0.475		14.331		0.617		17.100
25	0.191		8.404		0.263		10.191		0.355		12.309		0.470		14.801		0.613		17.713
26	0.187		8.591		0.259		10.449		0.350		12.659		0.466		15.267		0.609		18.323
27	0.183		8.774		0.255		10.704		0.346		13.005		0.462		15.728		0.606		18.929
28	0.180		8.954		0.251		10.955		0.342		13.347		0.458		16.186		0.603		19.531
29	0.177		9.131		0.247		11.202		0.338		13.685		0.454		16.640		0.599		20.131
30	0.174		9.305		0.244		11.446		0.335		14.020		0.450		17.091		0.596		20.727

Estimate the additional amount of time needed to finish the 13-unit job if the work has a 75 percent learning rate. (Round your intermediate calculations and final answer to 3 decimal places.)