Respuesta :
Answer:
Angela, a proportion is two equal ratios, kinda like 3/4 = 6/8.
If we call the number of cars c, then our proportion is 3/10 = c/100.
Cross multiplying, we get 10c = 300.
Dividing both sides by 10, c = 30.
Answer:
- 30 cars
Step-by-step explanation:
3 cars made up 10% of all the cars x:
- 3 ⇒ 10%
- x ⇒ 100%
- x = 3*100/10 = 30