An annuity is a series of equal payments occuring at equal time intervals, and this amount includes the sum of all payments plus interest, if allowed to accumulate at a definite rate of interest from the time of initial payment to the end of annuity term. Ordinary annuity is used in the calculation of the

manufacturing cost.
depreciation by sinking fund method.
discrete compound interest.
cash ratio.
✅ The correct answer is option B.

The depreciation during the year ‘n’, in diminishing balance method of depreciation calculation, is calculated by multiplying a fixed percentage ‘N’ to the

initial cost.
book value at the end of (n – 1)th year,
depreciation during the (n – 1)th year.
difference between initial cost and salvage value.
✅ The correct answer is option B.