The ratio of red cars to black cars in a parking lot is 3 : 4. If there are 9 red cars, how many black cars are there?
Translate : Tỉ số của số xe ô tô đỏ và ô tô đen là : 3:4 . Nếu có 9 ô tô đỏ thì có mấy ô tô đen ?
Solution :
The number of black cars is : (Số ô tô đen là:)
\(9\div3\times4=12\)
Answer (Đáp số) : 12
Answer: 12 black cars
The ratio of red cars to black cars in a parking lot is 3 : 4. If there are 9 red cars, how many black cars are there?
Answer :
The number of black cars is :
9 : 3 x 4 = 12 ( car)
Answer : 12 black cars
12 black cars
12 black cars
\(\frac{3}{4}\)=\(\frac{9}{12}\)
12 black cars
