Question

If 35 of the 140 cars delivered to a dealer were blue, what percent of the car is blue

Answer 1

In order to find the percentage, simply divide the total by the number of blue cars.

35/140 = .25

Now, simply put .25 into the right format:
25%

Check by multiplying 140 by .25

140 • .25 = 35
35 = 35 ✔️
Everything checks out

ANSWER: 25% of the cars are blue

Answer 2

If we take 140 to be the 100%, what is 35 off of it in percentage anyway?

$\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 140&100\\ 35&p \end{array}\implies \cfrac{140}{35}=\cfrac{100}{p}\implies p=\cfrac{35\cdot 100}{140}$