Answer:
The Journal entries are as follows:
(i) Cash A/c Dr. $550
To due to customer $550
(To record the amount received)
(ii) Cash A/c Dr. $810,600
To sales ($810,600 ÷ 1.05) A/c $772,000
To sales tax payable ($772,000 × 5%) $38,600
(To record the cash sales)
(iii) Truck A/c ($121,700 × 1.05) Dr. $127,785
To cash A/c $127,785
(To record the purchase of trucks)
(iv) Land improvement A/c Dr. $87,300
To Asset Retirement Obligation $87,300
(To record the land improvement)