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

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5. The value of a mark being 13s. 4d., and that of a moidore 27s.,
how many half-crowns are there in 30 marks and 40 moidores
together?
6. How many roubles, at 3s. 4~d. each, are worth 132678 francs
at 93d. each?
7. If nine rupees, six crown pieces, and eleven threepenny pieces
amount to ~2 13s., what is the value of a rupee?
8. How many pounds sterling amount to 274 marks, each equal to
13s. 4d., and 87 nobles, each equal to 6s. 8d.?
VI.
1. A debt of 20 guineas is to be discharged by three equal payments
in half-crowns, shillings, and sixpences; find the number of coins in
each payment.
2. Divide ~34 4s. into two parts, so that the number of crowns in
the one may be equal to the number of shillings in the other.
3. A debt of ~18 15s. 10d. is paid in crowns, shillings, and pennies,
giving for every penny two shillings and three crowns; find the number of each sort of coins.
4. A has as many sovereigns as B has shillings, and together they
have ~210; required the number each had.
5. One person has a certain number of shillings, another as many
crowns, and a third as many pounds, and together they have ~520.
How much has each?
6. Divide ~34 into an equal number of sovereigns, half-sovereigns,
half-crowns, shillings, and sixpences.
7. The sum of ~211 10s. 5d. was paid in pounds, shillings, and
pence, the number of pounds being 7 times the number of shillings,
and the number of shillings 6 times the number of pence. How
many were there of each?
8. A bag contains sixpences, shillings, and half-crowns; the three
sums of money expressed by the different coins is the same; if there
are 102 coins in the bag, find the number of sixpences, shillings, and
half-crowns.
VII.
1. Show that one penny a day is equal to a sovereign, half-sovereign,
and five pence a year; and hence deduce a rule for finding how much
any daily payment would amount to in one year.
2. A person's income is reduced from ~750 to ~734 7s. 6d. by income
tax. How much does he pay in the pound?
3. WThen the income tax was 4d. in the pound a person paid
~2 18s. 5d., and when it was 6d. in the pound he paid ~3 13s. 7d.
What was the difference between his income in the two years?
4. If a person's daily expenditure be ~2 12s. 6d. what must be his
annual income in order that he may save ~250 a year?