it is no longer possible to use mechanistic strategies to solve problems of a completely different nature.
English
it is no longer possible to use mechanistic strategies to solve problems of a completely different nature.
Last Update: 2018-02-13
Usage Frequency: 1
Quality:
Be the first to vote
Spanish
the people have to pay to the policemen, doctors, civil servants, political... to solve problems.
English
the people have to pay to the policemen, doctors, civil servants, political... to solve problems.
Last Update: 2018-02-13
Usage Frequency: 1
Quality:
Be the first to vote
Spanish
my point here is: knowledge does not take up any space. so the more
resources you have to solve problems, the better for your performance. this
way, in case you have only a few seconds to answer the last question of
your test, and need to obtain quickly the increase between two figures, for
example, from 850 euros to 1200 euros, it will be much faster doing one
operation (division) with your calculator:
1200 / 850 = 1.4118 41.18% increase
than doing two operations (subtraction and division):
(1200 - 850) / 850 = 0.4118 -> 41.18%
considering that both methods give you the same information, if you look
carefully at their decimal figures.
that is why i told you in our book's introduction that numbers can 'speak' to
you somehow, giving more information that you could expect from them at
first sight.
let me present too how to obtain percentage decreases with this system, in
a very similar way.
for example:
initial value: 200
final value: 175
how much is the variation?
we apply exactly the same formula:
92
English
note that, as you get more practice, you will not even need to subtract the
unit, because when you obtain the direct result, 1.1, this is exactly the way
that we used in our section of percentages review to increase values,
referred to the unit, like for example:
to increase 200 by 10% (so, 1 + 0. 10)
200 * 1.10 = 220
so when you get the factor, 1.1, you can deduce this means an increase of
10%.
now let us compare how much faster is getting the variations of our
exercise, in relation to the first formula that we explained:
lifestyle g.: 122 / 110 = 1.1091 -> 10.91% increase
ocado p.: 230 / 210 = 1.0952 9.52% increase
sun ph.: 205 / 185 = 1.1081 10.81% increase
please take your time to understand this method, and practise with your
own values too.
you could maybe think that it is a bit too advanced for your level,
especially if you still feel unconfident when working with percentages. in
that case, you could keep using the classical formula in your exam, no
problem, because you will probably have time enough to do the
calculations required.
91
Last Update: 2021-03-16
Usage Frequency: 1
Quality:
Excellent
Reference: Anonymous Warning: Contains invisible HTML formatting
Some human translations with low relevance have been hidden. Show low-relevance results.
