15. 19.60875 A. 20. 18.63555 A. 22. 2721 sq. ft., 39,204 sq. in.

21. 4840 sq. yd., 43,560 sq. ft.

23. 102,400 sq. rd., 3,097,600 sq. yd., 27,878,400 sq. ft.
24. 3.05 sq. mi., 1952 A.
26. 3421.68 sq. ft.
25. 7.8 A., 78 sq. ch., 1248 sq. rd. 27. 380 sq. rd.

28. x15 ch., y = 8 ch., 100 ch., 48 A.
29. 22,440 sq. ft.

30. $3825.

32. x 60 ch., y = 15 ch., 190 ch., 140 A.

33. No, 400 sq. ch., 300 sq. ch.

34. $5400.

31. The second, $140.

35. $23,383.50.

36. $9618.75.

Pages 58, 59

1. 121.68 sq. ft. 2. 393 sq. ft. 3. 1611 sq. ft. 6. 1181.5 sq. ft., 26.13 sq. in., 43,974.4925 sq. ft.

4. 7 yd. 5. 32 in.

9. 60 cu. ft., 65 cu. ft., 103,680 cu. in., 112,320 cu. in.

1. 1 hr. 48 min. 17 sec.

3. 11 hr. 8 min. 10 sec. A.M.

2. 5 hr. 2 min. 2 sec.

4. 105, 9 P.M. 5. 4 A.M., 8 P.M.

6. 8 hr. 22 min. 42 sec. A. M., 8 hr. 2 min. 42 sec. A.M.

10. 9 P.M. Dec. 31, 10 P.M. Dec. 31, 11 P.м. Dec. 31, 5 A.M. Jan. 1,

6 A.M. Jan. 1.

Page 83

1. 4 min. 6 sec., 5 min. sec.

2. 44 min. 13.9 sec., 5 hr. 49 min. 283 sec.

3. 3 hr. 14 min. 4313 sec., 5 hr. 4 min. 20 sec.

4. 54 min. 33 sec., 2 hr. 19 min. 15

sec.

6. 11 hr. 54 min. 59.2 sec. A.M., 10 hr. 54 min. 59.2 sec. A.M.

3. 574%, 621%, 27%, 263%, 155%, 413%. 6. $579.39, $255.75, $325.50.

7. $142.50.

11. 17. 15. . 19.

12. . 13.

67 400.

21. 5
259
800.

22. 279

1000