Anfwer  £i§  15/


The  above  example  is  worked
by  3  different  methods,  to  fhew
the  concifenefs  of  each.-— The  ra-
tio or  rate  of  £1  for  a  year  at  the
given  rate  is  thus   found.      As

fxoo  :  £s  r.'li  :  £>o$  and

fo  may  any  other  ratio  be  found
as  in  the  annexed  table.
Note*  The  dividing
by  100  in  this  and  the
75         following    examples
20         (where  needful)  is per-

—  formed  by  cutting  off
o  the  figures  with  a

—  ftraight  line.     See  the
r eafon  page  291.
3d.  By  Decimals

1       •  ,

315  principal
.05  ratio

Anfw.  15.75=1/15  15/

Table


Rate           Ratio

3  1

f.o3

3i

.035

3i

.0375

4      1

\  =  \  *°4

4i

.0425

4t

.045

i     J

1 .05

Note.  Lawful  Intereft  is  £ 5  per  cent,  per  annum*
that  is  £s  for  the  ufc  or  Intereft  of  £  100  for  a  year
or  12  months.
EXAMfLE


Simple  Intereft.
Example  2.
At  Simple  Intereft  tell  me  plain,
What  fourteen  thoufand  pound  wiH  gain  ;
At  three  pound  ten  per  cent,  per  annum t
For  feven  years  to  pleafe  a  Grannum,


3*7


£

i)  14000

3*

42000
7000

490  Int.  for  1  yr
7  No.  of  yrs.
Anfw.  3430


By  Deci ma  Is.
14000  principal
.035  ratio


70000
42000


490  Int.  for  1  yr.
7  No.  of  yrs.
/3430  Anfwer


Example  3.
What  is  the  Intereft  of  £206  12s  for  4  £  years;
at  £5  i  per  cent,  per  annum  ?

£,  .£    '

*     £    *


i°|A|  10    6    7
1    -    7*


II


7       2JJ«


4  i  No.  of  years


-  IO[l

J     10J  I


45     8  11

2


Anfwer  £/fi


8  11    1  t  f4   years
5    8iJ  *  U|  years.
