Please help

Question

15. The scale of a map is 1 inch = 24 miles. How many miles does 125 inches represent?

25 miles
31.25 miles
62.5 miles
49.26 miles

My answer is 25 miles

16. The ramp shown below is used to move crates of fruit to loading docks of different heights. When the horizontal distance AB is 12, meters, the heights of the loading dock, BC is 4 meters. What is the height of the loading dock DE?

12m
8m
9m
15m

My answer 15

17. A bag contains 10 white gold balls and 6 striped gold balls. A golfer wants to add 112 golf balls to the bag. He wants the ratio of whit to striped golf balls to remain the same. How many of each should he add?

I'm not sure how to work this one out.
I tried dividing 112/6 then 112/4

19. Tell whether the pair of polygons is similar. Explain why or why not

1ST POLYGON IS PQ-8FT, QR-13FT, RS-8FT,
2ND POLYGON IS TU-5.2FT, UV-2.4FT, VW-5.2FT

My answer is 8/13=5.2/2.4 = 67.6/19.2
8/13=3.2/2.4=41.6/19.2
So answer no?
Not sure if my equation set up right