Question

This diagram represents 64 cars which passed a highway in one hour. What is the fraction of blue cars to the total number of cars?

• A. $\frac{2}{8}$
• B. $\frac{3}{64}$
• C. $\frac{5}{64}$
• D. $\frac{3}{8}$

Answer 1

The correct option is D

$\frac{3}{8}$

Total number of cars which passed the highway in 1 hour = 64

The diagram representing the total number of cars is divided into 8 equal parts.

$\therefore$ The number of cars each part represents is $=64÷8=8$

There are 3 blue parts, $\Rightarrow$ number of blue cars = 8 + 8+ 8 = 24

$\therefore$ Fraction of the blue cars to the total number of cars =$\frac{24}{64}$

$\frac{24}{64}$ can be simplified to $\frac{3}{8}$ ( dividing both numerator and denominator by HCF 8)