EXAMPLE. What will 2210 guilders in bank-money amount to in Holland currency, the agio being 3½ per cent.?

Guild.
As 100 : 103½ :: 2210
8 8 825
800 825 11050
4420
17680
Guild. fl. pen.
8|00 18232|50 (2279 1 4 cur.
16 20
22 10|00
16 8
63 2
56 16
72 32
72 32

Or, by practice,

50)2210
44.2 = 2 per cent.
22.1 = 1 per cent.
2.7625 = ¼ per cent.
2279.0625

If the agio only be required, make the agio the middle term, thus:

As 100 : 3½ :: 2210 : 69 1 4 agio. Or, work by practice, as above.

RULE. As 100+agio to 100, so the given guilders to the answer.