If 35 of the 140 cars delivered to a dealer were blue, what percentage were blue?

To find the percentage of blue cars delivered, you need to calculate how much 35 is in relation to the total number of cars, which is 140. The formula for calculating percentage is:

[

\text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100

]

In this case, the part is the number of blue cars (35), and the whole is the total number of cars (140).

First, divide 35 by 140:

[

\frac{35}{140} = 0.25

]

Next, to convert that decimal to a percentage, multiply by 100:

[

0.25 \times 100 = 25%

]

Therefore, 25% of the cars delivered were blue, making this the correct answer. This calculation shows a straightforward approach to finding what proportion of the total is represented by a specific quantity, and it's a common method used in various mathematical contexts, including business and statistics.