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lord [1]
3 years ago
13

The guidance system of a ship is controlled by a computer that has three major modules. In order for the computer to function pr

operly, all three modules must function. Two of the modules have reliabilities of .97, and the other has a reliability of .99.
a. What is the reliability of the computer?

b. A backup computer identical to the one being used will be installed to improve overall reli- ability. Assuming the new computer automatically functions if the main one fails, determine the resulting reliability.

c. If the backup computer must be activated by a switch in the event that the first computer fails, and the switch has a reliability of .98, what is the overall reliability of the system? (Both the switch and the backup computer must function in order for the backup to take over.)
Business
1 answer:
Mice21 [21]3 years ago
5 0

Answer:

a) 0.97 b) 0.9991 c) 0.008518

Explanation:

a) for the computer to work all modules must work so the lowest probsabiltiy of any one of the modules will determine the reliability of the computer.

b) Probabiltiy that 1st computer works+ Probability that 1st computer fails × Probability that back-up works

= 0.97+ 0.97×0.03

=0.9991

c) Probabiltiy that 1st computer works+ Probability that 1st computer fails× Probability that switch works× Probability that back-up computer works

=0.97+0.03×0.98×0.97

=0.998518

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The cost of plant in use with Hand Sanitizer Ltd (Hand Sanitizer), a manufacturing firm on 1 st April 2018 was GH₵375,000 agains
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Answer:

Hand Sanitizer Ltd

Relevant Accounts for the year ended 31st March 2019:

1. Plant Account:

Debit Balance on 1st April 2018 = GH₵375,000

Credit: Disposal of Plants on 31st December 2018   = GH₵40,500 (GH₵22,500 and GH₵18,000)

Debit: New Plants on 31st December 2018 = GH₵52,500

Debit Balance on 31st March 2019 = GH₵387,000

2. Accumulated Depreciation - Plant:

Credit Balance on 1st April 2018 = GH₵157,500

Debit: Disposal of Plants on 31st December, 2018 = GH₵27,427.10

Credit: Depreciation Expense ( 100,350 + 3,937.50) = GH₵104,287.50

Credit Balance on 31st March 2019 = GH₵234,360.40

3. Depreciation Expense:

Debit: Accumulated Depreciation for old plant GH₵100,350

Debit: Accumulated Depreciation for new plants GH₵3,937.50

Total = GH₵104,287.50

4. Disposal of Plants Account:

Debit: Plants = GH₵40,500

Credit: Accumulated Depreciation = GH₵27,427.10

Credit: Cash = GH₵16,500 (12,000 + 4,500)

Debit: Gain from Sale = GH₵3,427.10

Balance = GH₵0

Explanation:

a) Accumulated Depreciation for the disposed plants on reduced balance:

October 2015 to March 2016 for 6 months (30% of GH₵40,500 for 6 months) = GH₵6,075

March 2017 for 12 months = GH₵10,327.50

March 2018 for 12 months = GH₵7,229.25

December 2018 for 9 months = GH₵3,795.35

Total = GH₵27,427.10

b) Reduced Balance for Disposed Plants

October 2015 Cost = GH₵40,500

March 2016 less Depreciation = GH₵6,075

Reduced Balance = GH₵34,425

March 2017 less Depreciation = GH₵10,327.50

Reduced Balance = GH₵24,097.50

March 2018 less Depreciation = GH₵7,229.25

Reduced Balance = GH₵16,868.25

December 2018  less Depreciation = GH₵3,795.35

Reduced Balance = GH₵13,072.90

The depreciation charge for 2016 was for 6 months while the 2018 charge was for 9 months.

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