ISEE Middle Level Quantitative : How to find the solution to an equation

Study concepts, example questions & explanations for ISEE Middle Level Quantitative

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Example Questions

Example Question #11 : Equations

Which is the greater quantity?

(a) 

(b) 

Possible Answers:

(b) is greater

(a) is greater

(a) and (b) are equal

It is impossible to tell from the information given

Correct answer:

(a) is greater

Explanation:

Use the square root method to solve this equation:

Solve each equation separately: 

or

In either case, 

Example Question #131 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

         

Column A              Column B
      x                           y

Possible Answers:

The quantity in Column B is greater.

There can be no relationship determined from the two quantities.

The quantity in Column A is greater.

The quantities are equal.

Correct answer:

The quantity in Column A is greater.

Explanation:

First, off you need to find the quantities of x and y. For the first equation, add 9 to both sides so that Multiply both sides by 3 so that Then, solve the second equation. First, subtract 5 from both sides so that . Divide both sides by 5 so that  Therefore, the quantity in Column A is greater.

Example Question #11 : How To Find The Solution To An Equation

        

 

Column A                Column B

      x                             y

Possible Answers:

The quantities in each column are equal.

The quantity in Column A is greater.

There is no way to determine the relationship between the columns.

The quantity in Column B is greater.

Correct answer:

The quantity in Column A is greater.

Explanation:

First, you must solve for x and y. To solve for x, first subtract 7 from both sides, so that you get . Multiply both sides by 2, giving you 24 for x. To solve for y, first add 14 to both sides, which gives you Divide both sides by 3 to give you 7. Therefore, Column A is greater.

Example Question #141 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

Which is greater?

(A) 

(B) 

Possible Answers:

(A) is greater

(A) and (B) are equal

It is impossible to determine which is greater from the information given

(B) is greater

Correct answer:

(B) is greater

Explanation:

 

 

, and (B) is greater.

Example Question #142 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

What is  equal to?

Possible Answers:

It is impossible to answer the question from the information given.

Correct answer:

Explanation:

Example Question #15 : How To Find The Solution To An Equation

Evaluate .

Possible Answers:

It is impossible to determine the value of  from the equation.

Correct answer:

Explanation:

Example Question #13 : Equations

Evaluate .

Possible Answers:

It is impossible to determine the value of  from the equation.

Correct answer:

Explanation:

Example Question #12 : How To Find The Solution To An Equation

. Which is the greater quantity?

(A) 

(B) 

Possible Answers:

It is impossible to tell which is greater from the information given

(B) is greater

(A) and (B) are equal

(A) is greater

Correct answer:

(B) is greater

Explanation:

If , then . Subsequently, 

making (B) greater.

Example Question #14 : How To Find The Solution To An Equation

 and  are integers.  and .

Which is the greater quantity?

(A) 

(B) 

Possible Answers:

(A) is greater

(B) is greater

It is impossible to tell which is greater from the information given

(A) and (B) are equal

Correct answer:

(B) is greater

Explanation:

 and  is an integer, so  and  is an integer, so . Therefore,  and (B) is the greater.

Example Question #144 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

Which is the greater quantity?

(A) 

(B) 

Possible Answers:

(B) is greater

(A) is greater

(A) and (B) are equal

It is impossible to tell which is greater from the information given

Correct answer:

It is impossible to tell which is greater from the information given

Explanation:

Note that we are not given that and  are whole numbers.

Setting  to , or  fulfills the condition that  and , but in these cases, , respectively. It cannot be determined which is greater.

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