Facit C1-13 - Page 26

Exomple
Computlhg
proporiions
Ilxample:
'lotal
expenses of
68.75 kronor are to
be
proportioned
among
the folloving four
sums:
?
)
)
521.t5
68.7 5
The total of these
amounts,
521.15, is divided
into
68.75 to
obtain a
constant, 0.13192,
which is used
in the subsequent
multiplications.
Set
up this
constanr
and multiply
by the first number,23.43
Point off decimal
places
in the
product
register
and
your
answer
is 3.09. Don't
clear the
registers.
Change the
figures 23.43 in
the multiplier
register
into the next number,294.80,
by
positive
or
nega-
tive turos.
Continue in the
same manner
with
the
two
remaining amounts,
49.64
and 153,28.
Finally,
check
your
computations
by
adding the
answers. Our
problem
should now look
like this:
23.43
294.8A
49.6+
753.28
l).+)
294.8A
49.64
153.28
521.15
3.09
3 8.89
6.5s
20.22
68.75
22