Can someone check my answer and explain?

41/17 as a decimal rounded to the nearest hundredth

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class