The cost of the land = $50000
The selling price of the land = $120000
Total profit gained on the land =

Total amount received in cash in current Year = $10000
As given , let us assume that Perry uses the installment method to recognize the gain
Profit to be recognized in current year using installment method =
(Total Profi *Cash Received) /Sales Consideration
=
=5833.33
Hence, Perry should recognize a gain of $5833.33