If a car travels 300 km in 3 hours, what is the ratio of kilometers to hours? 100:1
3:300
300:3
1:100
A bag contains black and white marbles in the ratio of 2:3. If there are 10 black marbles, how many white marbles are there? 15 white marbles
20 white marbles
10 white marbles
5 white marbles
In a class, the ratio of students wearing glasses to those not wearing glasses is 1:4. If there are 20 students in the class, how many are wearing glasses? 4 students
5 students
15 students
10 students
A rectangle has a length of 10 cm and a width of 5 cm. What is the ratio of the width to the area of the rectangle? 1:10
1:20
1:50
1:2
