All HSPT Math Resources
Example Questions
Example Question #591 : Concepts
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 #63 : Percentages
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 #64 : Percentages
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 #591 : Arithmetic
is 40% of 150.
is 30% of 200.
is 20% of 225.
Which are equal to each other/one another?
and
and
No two of , , and are equal.
and
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 #11 : Use Proportional Relationships To Solve Multistep Ratio And Percent Problems: Ccss.Math.Content.7.Rp.A.3
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 #591 : Concepts
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%.
Example Question #71 : Percentages
is one-third of , which is four-fifths of . What percent of is ?
is four-fifths of , so .
is one-third of , so
is of ; the percent equivalent is that is
of
Example Question #74 : Percentages
is three-fourths of and three-fifths of . What percent of is ?
For simplicity's sake, we will set ; this reasoning is independent of the value of .
is three-fourths of - that is,
.
Since is also three-fifths of ,
To find what percent is of , calculate:
Example Question #592 : Arithmetic
What is % of 60?
% of 60 can be calculated as follows:
Example Question #593 : Arithmetic
is what percent of ?
Round to the nearest whole percent.
To calculate what percent is of , evaluate:
The closest answer is 93%.