model answers are shown below.

but i did not know how to calculate. please teach me in a step by step approach.

the answer are depreciation in $2020$ and $2021$ are $22562400$

in $31$ march $2021,$

impairment loss $18517812$

$($ how to calculate impairment loss in $2021$ and $2023?)$

the depreciation in $2022$ is $16389796$

$($ how to calculate $?)$

the impairment loss in $2023$ is $787535$

$($how to calculate $?)$

depreciation in $2024$ is $17832000$

$($ how to calculate $?)$

$31$ march $2024$ is

dr bank $618240$

cr gain on disposal $588240$

cr excavatort truck $30000$

$($ how to calculate gain on disposal?$)$

$---------------$

QUESTION $4$

Entity $A$ is a leading company in the construction industry in Hong Kong. It leased

construction excavator trucks to local building sub$-$contractors for more than five decades.

On $1$ January $2019,$ Entity A purchased $48$ units of construction excavator trucks. The

economic life of the excavator truck is $5$ years. The invoice price was $$2,350,000$ per unit.

They were all delivered to Entity A on $1$ April $2019.$ An installation expense of $$180,000$ was

incurred for installing $48$ units of excavator truck on $1$ April $2019.$ The invoice price and the

installation expense were settled on $5$ May $2019$ and $1$ April $2019$ respectively.

On $31$ March $2021,$ the construction market was suddenly turned down due to several new

government legislation on the construction industry. Therefore, Entity A estimated that each

construction excavator truck would be able to generate $$450,000$ cash per annum in the

remaining years and the scrap value of these $48$ units of construction excavator truck was a

total of $$30,000.$ Entity A also estimated that if they were sold to the second$-$hand market, the

value of each construction excavator truck would be $$990,000.$ A disposal cost of $$120,000$

would be incurred for selling them.

On $31$ March $2022,$ Entity A confirmed that further impairment adjustments were not needed

after the impairment review.

On $31$ March $2023,$ the construction market dramatically turned up due to the recent

economic boom. Entity A estimated the value of the use of an excavator truck would be

$$375,000.$ However, these excavator trucks could not be sold at that time due to a lack of a

buyer.

On $31$ March $2024,$ the scrap value of the excavator truck was sold at $$12,880$ each.

The end of the reporting period is $31$ March. The discounting rate was applied as $15\mathrm{.}00\%$ per

annum. The depreciation policy for the construction excavator truck is based on the

straight$-$line method with a residual value of $$3,500$ each.

REQUIRED:

According to relevant accounting standards, provide all necessary journal entries of Entity A

from $1$ January $2019$ to $31$ March $2024.$

ACCOUNTS FOR INPUT: