To calculate interest by the preceding table.

RULE.

Multiply the sum by the rate per cent. and that product by the months, weeks or days given; then cut off the two last figures to the right hand, and enter the table with what remains to the left; against which numbers, collected, is the interest for the given sum.

Note. For every 10 cut off in in months, add 2d. for every

20 in weeks, add id. and for every 40 in days, add 1gr. I What is the interest of 2466 16s 64. for 10 months, at 4 per cent. per annum?

986/73 0 O

"I 21

6.82 4 61 answer.

2 What is the interest of 2467/ 10s. for 12 weeks, at 5

per cent. per annum ?

answer. 281 9s 5d.

3 What is the interest of 2467/ 103. for 50 days, at 6 per cent. per annum ?

L. S. d.

700019 3 63

400= I I II

2467 10X6X50=7402150

2

Add

ans. 201 55 7d

To find what any estate from 1 to 50000l. per annum

will be for a month, or a day;

RULE.

RULE.

Collect the sums from the table opposite the given numbers for the answer.

EXAMPLES.

At 365% per annum, what is that per day; also per month ?

S. d.

300=165

L. S. d.

25

5

To find the amount of any income, salary or servant's wages, for any number of months, weeks or days;

RULE.

Multiply the yearly income, or salary, by the number of months, weeks or days, and collect as before from the table.

EXAMPLE.

What will 270/. per annum come to for II months, for 3 weeks, and for '6 days, separately and collectively?

L. s. d. 166 14 4

270X11=2970

{

75 O O
5 16 8

A TABLE

Of Days for any given time less than a Year.

9th. Mon. 4+

8th. Mon. N

7th. Mon. co

6th. Mon.

5th. Mon. Q

3d. Mon.

4th. Mon. aa

1 13260 91 121 152182213 244 274305 335 223361 92122 153 183214245275 306 336 3 33462 93123 154 184215246276307 337 4 43563 94124 155 185 216247 277 308 338 5 53664 95 125 156 186 217 248 278 309 339 6 63765 96126157187218249279310340 7 73866 97 127 158 188219250 280 311341 8 83967 98128159189220 251281312342 9 94068 99 125 160 190 221 252 282 313 343 10104169100 130161191 222 253 283 314 344 11114270101131162192223254284315 345 12124371102132163|193224255285316346 13134472 103 133 164194 225 256 286 317 347 14144573104 134 165 195 226 257 287 318348 15154674105135166196227 258 288319 349 16164775 106 136 167 197 228 259289320 350 17 17 4876 107 137 168 198 229 260 290 321 351 18184977 108 138 169 199 230 261 291 322 352 19195078109139170200 231262 292323353 2020 5179110140171201 232 263 293 324 354 21 21 5280111141172202233264294 325 355 22225381112142173203234265295 326 356 23 235482113143 174204235266296 327 357 24245583114144 175 205236267 297 328 358 25 25 56 84 115 145 176206 237 268 298 329 359 26265785116146177 207 238 269 299 330 360 27 27 58 86 117 147 178208|239 270|300 331 361 28 28 59 87 118 148 179 209 240 271 301 332 562 29 2960 88 119 149 180 210 241 272 302 333 363 5030 89 120 150 181 211 242273 303 334 364 3131 90 151 304 365

212 243

I

THE USE OF THE TABLE.

First, To know the number of days, from the beginning of the year, to any given day of any month:

This is obtained by inspection only.

Secondly, To find the number of days from any day in any month to the end of the year.

Suppose from 10th 9mo.

From

Take the days answering to 10th 9mo.

Remains

365

253

Days 112

Thirdly, To find the number of days between different dates.

Suppose the 9th of the 5th month, and the 5th of the 11th month.

From the number answering to 5th 11mo. 309
Take that of the 9th 5mo.

Remains

129

Days 180

Fourthly, To find the number of days from a given date, to some other in the year following:

Suppose from 12th 10mo. to 10th 6mo. ensuing.
From

Take the number answering to 12th 10mo.

To which add the 10th 6mo.

Days required

365

285

80

161

241

Note. If the intercalary day of a leap year intervene, one day must be added to those found as before.

Compound interest is that which arises from a principal increased by its interest as the interest becomes due.

RULE.

Find the first year's amount by simple interest, which will be the principal for the second year; and the amor nt of this will be the principal for the third year, &c.

From the last amount, take the given principal, and the remainder will be the compound interest.

EXAMPLES.

1 What is the compound interest of 450l. for three years, at 5 per cent. per annum?

Principal
Interest-

£. S. d.

450 0.0

22 10 0

20

Amount 2d year

Interest

Amount 3d year
Principal

2 What will 400l. amount to in 4 years, at 6 per cent. per annum ? answer 5041. 198. 9d.1 3 How much is the compound interest of 1280 dols. for six years, at 5 per cent. per annum? answer 435,32,2 mills. 4 What will 500l. amount to in 4 years, at 44 per cent. per annum ? answer 5901. 11s. 5d. 5 What is the compound interest of 400l. 10s. at 31 per cent. per annum, for three years ? answer 431. 10s. 9d.

R

EBATE, or Discount, is an abatement for the payment of money before due, by accepting so much, as would amount to the whole debt at the time payable, at a given rate.

RULE