Answer, 592⅞.
If 20 men, in 3¼ days, can dig 7 rectangular fields, the sides of each of which are 40 and 50 yards, how long will 37 men be in digging 53 fields, the sides of each of which are 90 and 125½ yards?
| Answer, 75 | 2451 | days. |
| 20720 |
If the carriage of 60 cwt. through 20 miles cost £14 10s., what weight ought to be carried 30 miles for £5. 8. 9?
Answer, 15 cwt.
If £100 gain £5 in a year, how much will £850 gain in 3 years and 8 months?
Answer, £155. 16. 8.
SECTION III.
INTEREST, ETC.
245. In the questions contained in this Section, almost the only process which will be employed is the taking a fractional part of a sum of money, which has been done before in several cases. Suppose it required to take 7 parts out of 40 from £16, that is, to divide £16 into 40 equal parts, and take 7 of them. Each of these parts is
| £ | 16 | and 7 of them make | 16 | × 7, or | 16 × 7 | pounds (116). |
| 40 | 40 | 40 |