Elementary arithmetic, with brief notices of its history... by Robert Potts.

32
4. 100 cubic inches. 5. 22 cubic inches and 22 lineal inches. 6. 312800 bricks
7. 2613600 cubic feet. 8. 10 feet. 9. 172800 bricks. 10. 8072 bullets.
XVI.
1. 1 cubic foot nearly. 2. 625 cwt. 3. 9 feet deep. 4. 1728 cubic feet and 720
square feet. 5. 4 feet deep. 6. 324001b. 7. 5s. 6d. a gallon.
XVII.
1. 7912 miles. 2. The exact difference is 179yds. Oft. 4in., which is in defect of
a furlong. 3. 110760000 times. 4. More than 206 times the distance of the earth
from the sun.
XVIII.
2. 7481b. 8oz. 16dwts. llgrs. 3. 151511b. 6oz. 3dwts. 15grs. nearly. 4.
~3 17s. 10~d. per ounce. 5. 6 grains on 201b. of gold give 300 grains allowed on
lOO0b.: and l0dwts. on 801b. of silver give 125 grains allowed on 1000llb. 6.
3000 shekels in one talent in the time of Moses.
XIX.
1. 18dwts. 2. A little less than 2d. 3. ~3 15s. 2-ld. nearly. 4. ~7 7s. very
nearly. 5. ~41 7s. lOd. 6. 2s. 6d. nearly. 7. Excess of weight 73196 ounces: in
value ~285064 7s.
XX.
1. 6 tons 17cwt. Iqr. 121b. 4oz. 5drs. 2. lcwt. 3qrs. 141b. 14drs. 4. 1 ton
14cwt. 981b. 4oz. 6. The quotient is 35, an abstract number denoting the number
of times 14cwt. 731b. is contained in 512cwt. 3qrs. 71b.
XXI.
1. Express the money in farthings, the weight in pounds. 2. 721174 twopenny
pieces: 46362702 penny pieces: 42483320 halfpenny pieces and 4195832 farthing
pieces: the total number 93763028. 3. Weight of each packet 131b. 4. 171
packages. 5. 53760 penny pieces, value ~224.
XXII.
1. The ounce Troy exceeds the ounce Avoirdupois by 42 grains and a half.
2. 481b. Troy and 5720 grains over: 40lbs. Avoirdupois and 1750 grains over.
3. 413oz. lldwts. 16grs. Troy of silver. 4. 7000grs. in lib. Avoirdupois. 5. At lld.
per ounce Avoirdupois very nearly.
XXIII.
1. See Art. 8. 2. 30 English degrees, but 33 and one-third French degrees.
3. Since 90 English degrees are equal to 100 French degrees, 1 English degree is
equal to -10 or 1+$- French degree: and 1 French degree is equal to - or 1 ---'English degree. Hence, any number of English degrees increased by one-ninth are
changed to French degrees; and any number of French degrees diminished by onetenth are changed into English degrees. 4. 33~ 30' 10" English. 5. 9~ 36' 55".
6. 85~ 4' 41". 7. 50~ 16' 42" nearly. 8. Difference of longitude between Athens
and Rome, 11~ 19' 46": difference of longitude between Rome and Philadelphia,
87~ 37' 14".
XXIV.
1. 7794612 seconds. 2. 11 days 3hrs. 46min. 40sec. 3. 223200 seconds. 4.
515451696 seconds. 5. 16208234 hours. 7. 2551443 seconds.

XXV.
2. Between 46 and 47 days. 3. 8hrs. 556min. 30scc. i.m. 4. Shrs. 51min. a.m.