(27) First, 17s. 6d. = 210d.:

then, 210d. x 340 = 71400d. = £297. 10s.

(28) First, 198gs. = 198 × 21 = 4158s.

then, 4158s. ÷ 27 = 154 moidores.

=

(29) First, 3s. 4d. = 40d., £453. 16s. 8d. 108920d.: then, 108920 ÷ 40 = 2723 pieces.

(30) First, 2 ft. 10 in. 638640 in.

over.

=

34 in. 10 mi. 140 yds. then, 638640 ÷ 34 = 18783 times, and 18 in.

=

(31) First, 14 oz. 13 drs. = 237 drs.: 25 cwt. 2 qrs. 14 lbs. = 734720 drs.: then, 734720237 = 3100 times, and 20 drs. 1 oz. 4 drs. over.

=

(32) First, 4ft. 7 in. = 55 in.: 2 mi. 4fur. = 158400 in.; then, 158400 ÷ 55 = 2880 revolutions.

=

(33) First, 2 fur. 20 po. 100 po. is the length into which 5 oz. of silk is spun: and therefore 20 po. is the length into which 1 oz. will be spun: also, 240000 mi. 76800000 po.: whence, the weight sought will evidently be 76800000 ÷ 20 = 3840000 oz. = 107 tons, 2 cwt. 3 qrs 12 lbs.

=

(34) First, we have 365 days, 6 hrs. 31557600 sec.: and thence 295402374 ÷ 31557600 = 9 yrs. and 11383974 sec. over: or 9 yrs. 131 days, 18 hrs. 12 min. 54 sec.