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MARKETABLE SECURITIES (Tables)
12 Months Ended
Jul. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Schedule of Classified Marketable Securities

As of July 31, 2021 and 2020, the Company’s marketable securities were classified as follows:

July 31, 2021 July 31, 2020
    Gross     Gross         Gross Gross    
Unrealized Unrealized Fair     Unrealized     Unrealized Fair
Cost Gains Losses Value Cost Gains Losses Value
Available-for-sale:
Mutual funds $ 984,869 $ 619,972     $     $ 1,604,841 $ 1,077,493 $ 297,064     $     $ 1,374,557
Corporate equity
securities 1,355,961 940,291 2,296,252 1,553,275 823,010 5,937 2,370,348
$ 2,340,830 $ 1,560,263 $ $ 3,901,093 $ 2,630,768 $ 1,120,074 $ 5,937 $ 3,744,905
Schedule of Investment Income

Investment income for the years ended July 31, 2021 and 2020 consists of the following:

2021       2020
Interest income $ 850 $ 20,446
Dividend income 98,915 96,569
Gain on sale of marketable securities 73,783 28,546
Total $ 173,548 $ 145,561