Chapter 1: Q8. (page 52)

The ratio of girls to boys in a class is 5 to 4. If there are total of 27 students in the class, state how many are girls.
A. 15 B. 12
C. 9 D. 5

Short Answer

Expert verified

Number of girls in the class is 15 and the correct option isA.

Step by step solution

- State the definition of a variable.

A variable is a term that is used to represent an unknown value.

- Obtain the number of girls in the class.

The ration of girls toboys is 5 to 4.

The total ratio is:

$5 + 4 = 9$

Total number of students in the class is 27.

Then, number of girls in class is:

$\begin{matrix} Numberofgirls = \frac{Ratioofgirlsintheclass}{Totalratio} \times 27 \\ \frac{5}{9} \times 27 \\ = 5 \times 3 \\ = 15 \end{matrix}$

- State the conclusion.

Number of girls in the class is 15. Therefore, option A is correct.

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The ratio of girls to boys in a class is 5 to 4. If there are total of 27 students in the class, state how many are girls.
A. 15 B. 12
C. 9 D. 5

Short Answer

Step by step solution

- State the definition of a variable.

- Obtain the number of girls in the class.

- State the conclusion.

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The ratio of girls to boys in a class is 5 to 4. If there are total of 27 students in the class, state how many are girls.A. 15 B. 12C. 9 D. 5

Short Answer

Step by step solution

- State the definition of a variable.

- Obtain the number of girls in the class.

- State the conclusion.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Pure Maths

Geometry

Decision Maths

Applied Mathematics

Discrete Mathematics

Statistics

Study anywhere. Anytime. Across all devices.

The ratio of girls to boys in a class is 5 to 4. If there are total of 27 students in the class, state how many are girls.
A. 15 B. 12
C. 9 D. 5