Charles Austin of the controller's office of Martinez Corporation was given the assignment of determining the basic and diluted earnings per share values for the year ending December 31, 2018. Austin has compiled the information listed below.

1.The company is authorized to issue8,120,000shares of $10 par value common stock. As of December 31, 2017,2,030,000shares had been issued and were outstanding.

2.The per share market prices of the common stock on selected dates were as follows.

Price per Share

July 1, 2017 $20.00

January 1, 2018 21.00

April 1, 2018 25.00

July 1, 2018 11.00

August 1, 2018 10.50

November 1, 2018 9.00

December 31, 2018 10.00

3.A total of753,600shares of an authorized1,164,000shares of convertible preferred stock had been issued on July 1, 2017. The stock was issued at its par value of $25.00, and it has a cumulative dividend of $3per share. The stock is convertible into common stock at the rate of one share of convertible preferred for one share of common. The rate of conversion is to be automatically adjusted for stock splits and stock dividends. Dividends are paid quarterly on September 30, December 31, March 31, and June 30.

4.Martinez Corporation is subject to a 40% income tax rate.

5.The after-tax net income for the year ended December 31, 2018, was $11,840,000.

The following specific activities took place during 2018.

1.January 1A 5% common stock dividend was issued. The dividend had been declared on December 1, 2017, to all stockholders of record on December 29, 2017.

2.April 1A total of439,200shares of the $3convertible preferred stock was converted into common stock. The company issued new common stock and retired the preferred stock. This was the only conversion of the preferred stock during 2018.

3.July 1A 2-for-1 split of the common stock became effective on this date. The board of directors had authorized the split on June 1.

4.August 1A total of298,800shares of common stock were issued to acquire a factory building.

5.November 1A total of25,200shares of common stock were purchased on the open market at $9.00per share. These shares were to be held as treasury stock and were still in the treasury as of December 31, 2018.

6.Common stock cash dividendsCash dividends to common stockholders were declared and paid as follows.April 15$0.30 per share

October 15$0.20 per share

7.Preferred stock cash dividendsCash dividends to preferred stockholders were declared and paid as scheduled.

(a)Determine the number of shares used to compute basic earnings per share for the year ended December 31, 2018.(Round answer to 0 decimal places, e.g. $1,500.)

Number of shares to compute basic earnings per share

(b)Determine the number of shares used to compute diluted earnings per share for the year ended December 31, 2018.(Round answer to 0 decimal places, e.g. $1,500.)

Number of shares to compute diluted earnings per share

(c)Compute the adjusted net income to be used as the numerator in the basic earnings per share calculation for the year ended December 31, 2018.

Adjusted net income$