Quarters

Q.

A quarter is ____ of a half.

1. $\frac{1}{2}$

2. $\frac{1}{3}$

3. $\frac{1}{4}$

4. $\frac{1}{6}$

Q.

In a box, the ratio of red marbles to blue marbles is 7 : 4. Which of the following could be the total number of marbles in the box?

1. 18
2. 19
3. 22
4. 21