**Q12: **

If divides by the ratio externally, find and .

- A ,
- B ,
- C ,
- D ,

**Q13: **

Given that the points are evenly spaced along the line, find the length of .

**Q14: **

If divides by a ratio of internally, find and .

- A ,
- B ,
- C ,
- D ,

**Q15: **

Given that the points are evenly spaced along the line, find the length of .

**Q16: **

In the following figure, points , , , , and are collinear. If , , and , find the length of .

**Q17: **

is the midpoint of , where and . Find and .

- A ,
- B ,
- C ,
- D ,
- E ,

**Q18: **

Find the value of given .

**Q19: **

Point is on the line between and . If , , and , what is the length of ?