Reciprocal

Q. The reciprocal ratio of $\frac{1}{a}:\frac{1}{b}$ is

1. $\frac{1}{a}:\frac{1}{b}$
2. $\frac{1}{b}:\frac{1}{a}$
3. $a:b$
4. $b:a$

Q. The reciprocal ratio of $12:18$ is

1. $18:12$
2. $2:3$
3. $3:2$
4. $2:8$

Q. The reciprocal ratio of $3\frac{1}{2}:5\frac{1}{4}$ is

1. 214:72
2. 32:54
3. 72:214

Q. The reciprocal ratio of $1\frac{1}{2}:6\frac{3}{4}$ is

1. $\frac{3}{2}:\frac{27}{4}$
2. $\frac{2}{3}:\frac{4}{27}$
3. $\frac{4}{27}:\frac{2}{3}$
4. $\frac{27}{4}:\frac{3}{2}$

Q. The reciprocal ratio of $3\frac{1}{2}:6\frac{1}{2}$ is

1. $\frac{13}{2}:\frac{7}{2}$
2. $\frac{2}{13}:\frac{2}{7}$
3. $\frac{7}{2}:\frac{13}{2}$
4. $\frac{7}{2}:\frac{13}{2}$

Q. The reciprocal ratio of $\frac{1}{a}:\frac{1}{b}$ is

1. 1b:1a
2. $a:b$
3. $b:a$