1. Compute the weighted-average number of common shares used in computing earnings per common share for 2019 on the 2020 comparative income statement.

2. Compute the weighted-average number of common shares used in computing earnings per common share for 2020 on the 2020 comparative income statement.

3. Compute the weighted-average number of common shares to be used in computing earnings per common share for 2020 on the 2021 comparative income statement.

4. Compute the weighted-average number of common shares to be used in computing earnings per common share for 2021 on the 2021 comparative income statement.

mmon Nash Inc. uses a calendar year for financial reporting. The company is authorized to issue 9,510,000 shares of $10 par com stock. At no time has Nash issued any potentially dilutive securities. Listed below is a summary of Nash's common stock activities. 1. 2. 3. Number of common shares issued and outstanding at December 31, 2018 Shares issued as a result of a 10% stock dividend on September 30, 2019 Shares issued for cash on March 31, 2020 Number of common shares issued and outstanding at December 31, 2020 A 2-for-1 stock split of Nash's common stock took place on March 31, 2021 2,060,000 206,000 1,890,000 4,156,000 4