Question

30% of the cars in a parking lot are green. If there 21 green cars, how many cars are parked in the parking lot?

Answer 1

Answer:

70 cars

Step-by-step explanation:

Let x cars are parked in the parking lot.

$30\% \: of \: x = 21 \\ \\ \frac{30}{100} \times x = 21 \\ \\ x = 21 \times \frac{100}{30} \\ \\ x = \frac{2100}{30} \\ \\ x = 70 \:$

70 cars are parked in the parking lot.