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Example Questions
Example Question #581 : Concepts
Convert
into a decimal.
In order to convert from a percentage to a decimal, simply remove the percentage and move the decimal place back two spaces or divide by 100.
The decimal conversion is:
Example Question #164 : Grade 7
What number increased by 25% is equal to 7?
To increase a number by 25% is to take
of the number, or, equivalently, multiply it by
.
Therefore, we divide 7 by
:
, so
.
Example Question #165 : Grade 7
What number decreased by 25% is equal to 7?
To decrease a number by 25% is to take
of the number, or, equivalently, multiply it by
.
Therefore, we divide 7 by
:
, so
.
Example Question #1184 : Hspt Mathematics
What is
increased by 30%?
Increasing a number by 30% is equivalent to taking 130% of a number, which in turn is equivalent to multiplying it by
.
increased by 30% is the product of and :
, so this quantity is equal to
, the correct answer.
Example Question #591 : Arithmetic
What is
decreased by 40%?
Decreasing a number by 40% is equivalent to taking 60% of a number, which in turn is equivalent to multiplying it by
.
decreased by 40% is the product of and :
, so the correct response is
.
Example Question #1181 : Hspt Mathematics
6 decreased by what percent is
?Select the closest answer.
The difference of 6 and
is
.
Therefore, 6 is being decreased by
; to find out what percent this is of 6, we calculate:
, so
.
The answer that comes closest among the four choices is 20%.
Example Question #591 : Concepts
12 increased by what percent is
?Select the closest answer.
The difference of
and 12 is.
This represents an increase of
, so this is
.
Tthe response closest to the correct percent is 30%.
Example Question #592 : Arithmetic
is 40% of 150.
is 30% of 200.
is 20% of 225.
Which are equal to each other/one another?
and
and
and
No two of
, , and are equal.and
is 40% of 150, which is
is 30% of 200, which is
is 20% of 225, which is
The correct response is
.Example Question #1182 : Hspt Mathematics
What is the percentage of male students in a class if
are male out of students?
First you want to make a proportion so
of the class are male.You can reduce this fraction by
since both the numerator and denominator are divisible by it.This gives you
which as a decimal is .To make that into a percentage, you multiple by
and add a "%" symbol.So that gives you
.Example Question #593 : Arithmetic
is 85% of .
What percent
must be increased by to obtain ?(Choose the closest answer)
The reasoning is independent of the value of
, so assume that .is 85% of , so .
To find out by what percent
must be increased by to obtain , calculate
This is
The correct choice is 18%.
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