Given that the fifth unit took 10 hours to build and the learning rate is 90 percent,how much time will it take to build units 11 through 15? Refer to the copy of Table I.1 appended to this exam.
A)fewer than or equal to 38 hours
B)greater than 38 hours but fewer than or equal to 40 hours
C)greater than 40 hours but fewer than or equal to 42 hours
D)greater than 42 hours

Question

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The Answer of Given that the fifth unit took 10 hours to build and the learning rate is 90 percent,how much time will it take to build units 11 through 15? Refer to the copy of Table I.1 appended to this exam.
A)fewer than or equal to 38 hours
B)greater than 38 hours but fewer than or equal to 40 hours
C)greater than 40 hours but fewer than or equal to 42 hours
D)greater than 42 hours

Given That the Fifth Unit Took 10 Hours to Build