49. 100-36= how many girls in percent
= 64%
64%= 16 girls
64/100=16/x
cross multiply
1600=64x
x=25
Answer:

Step-by-step explanation:
The geometric description of the vase is described in the image attached below. The volume of the solid part of the vase is:


Where:
- Outer diameter, in centimeters.
- Vase thickness, in centimeters.
Donald will have 20x+10 dollars