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A machine is depreciated at the rate of 20% on reducing balance. The original cost of the machine was Rs. 100000 and its ultimate scrap value was Rs. 30000. The effective life of the machine is

  • a)
    4.5 years (appx.)

  • b)
    5.4 years (appx.)

  • c)
    5 years (appx.)

  • d)
    none of these

Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A machine is depreciated at the rate of 20% on reducing balance. The o...
Cost of machine (P) = Rs 1,00,000


Scrap value (A) = Rs 30,000


Rate of Depreciation = 20% per annum on reducing value


The effective life of the machine in years is the number of years in which P (Rs 1,00,000) would reduce to A (scrap value Rs 30,000) reducing at the rate of 20% per annum of the value at the start of that year year.


Value of the machine at time t= 0 years = P


The depreciated cost at end of one year = P[1 — 20%] = P[1 — 0.2] = P × 0.8


At the end of second year = P × 0.8²


At the end of 3rd year = P × 0.8³


And so on.


Let after n years the value depreciate to scrap value. We are required to find n.


P(0.8)^n = A


1,00000 (0.8)^n = 30,000


=> (0.8)^n = (30,000)/(1,00,000) = 0.3


Taking log of both sides


n log (0.8) = log (0.3)


=>n × (-0.09691) = (-0.52288)


=> n = (-0.52288)/(-0.09691)= 5.396 year ~5.4 years
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Most Upvoted Answer
A machine is depreciated at the rate of 20% on reducing balance. The o...
A machine deprecated at the rate of 20% on reducing balance.
The original cost of machine is ₹ 1,00,000.


At the end of
First year : 1,00,000 - (1,00,000 × 20%)
= 1,00,000 - 20,000
= 80,000


Second year : 80,000 - (80,000 × 20%)
= 80,000 - 16,000
= 64,000


Third year : 64,000 - (64,000 × 20%)
= 64,000 - 12,800
= 51,200


Fourth year : 51,200 - (51,200 × 20%)
= 51,200 - 10,240
= 40,960


Fifth year : 40,960 - (40,960 × 20%)
= 40,960 - 8,192
= 32,768


Sixth year : 32,768 - (32,768 × 20%)
= 32,768 - 6553.6
= 26,214.4


The ultimate scrap value of machinery is ₹ 30,000
At the end of Fifth year, the value of machinery is ₹ 32,768.


At the end of 5years, 6 months (approx.)
= 32,768 × 20/100 × 5.0685/12
= 2,768


Then, the scap value of machinery is :
>>> 32,768 - 2,768 = 30,000


The ultimate life of machinery is :
>>> 5.4 years (appx.)
>>> Option B
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Community Answer
A machine is depreciated at the rate of 20% on reducing balance. The o...
Given:
Original cost of machine = Rs. 100000
Ultimate scrap value = Rs. 30000
Rate of depreciation = 20% on reducing balance

To find: Effective life of machine

Formula:
Depreciation = (Original cost - Scrap value) x Rate of depreciation
Effective life = Original cost / Annual depreciation

Calculation:
Annual depreciation = Original cost x Rate of depreciation
= Rs. 100000 x 0.2
= Rs. 20000

Let's assume the effective life of the machine is n years.
After n years, the book value of the machine will be equal to its scrap value.
So, we can write:
(Original cost - Depreciation for n years) = Scrap value
Rs. 100000 - Rs. (20000 x n) = Rs. 30000
Rs. 70000 = Rs. 20000 x n
n = 3.5 years

But this is the effective life of the machine assuming straight-line depreciation. Since the machine is depreciated at the rate of 20% on reducing balance, its effective life will be lesser than 3.5 years.

To calculate the effective life based on reducing balance depreciation, we can use the following formula:
Effective life = ln (Scrap value / Original cost) / ln (1 - Rate of depreciation)
where ln is the natural logarithm.

Effective life = ln (30000 / 100000) / ln (1 - 0.2)
= ln (0.3) / ln (0.8)
= 5.42 years (approx.)

Therefore, the effective life of the machine is approximately 5.4 years. Option (b) is the correct answer.
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A machine is depreciated at the rate of 20% on reducing balance. The original cost of the machine was Rs. 100000 and its ultimate scrap value was Rs. 30000. The effective life of the machine isa)4.5 years (appx.)b)5.4 years (appx.)c)5 years (appx.)d)none of theseCorrect answer is option 'B'. Can you explain this answer?
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A machine is depreciated at the rate of 20% on reducing balance. The original cost of the machine was Rs. 100000 and its ultimate scrap value was Rs. 30000. The effective life of the machine isa)4.5 years (appx.)b)5.4 years (appx.)c)5 years (appx.)d)none of theseCorrect answer is option 'B'. Can you explain this answer? for CA Foundation 2024 is part of CA Foundation preparation. The Question and answers have been prepared according to the CA Foundation exam syllabus. Information about A machine is depreciated at the rate of 20% on reducing balance. The original cost of the machine was Rs. 100000 and its ultimate scrap value was Rs. 30000. The effective life of the machine isa)4.5 years (appx.)b)5.4 years (appx.)c)5 years (appx.)d)none of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for CA Foundation 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A machine is depreciated at the rate of 20% on reducing balance. The original cost of the machine was Rs. 100000 and its ultimate scrap value was Rs. 30000. The effective life of the machine isa)4.5 years (appx.)b)5.4 years (appx.)c)5 years (appx.)d)none of theseCorrect answer is option 'B'. Can you explain this answer?.
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