Ratio and Proportion

The ratio of boys to girls in Mrs. Stefanski's class is 3 to 5. If there are 24 students, how many boys are in Mrs. Stefanski's class?
1. 9 boys
2. 15 boys
3. 8 boys
4. 20 boys
A day care with 80 children has 10 day care teachers. What is the ratio in simplest from of teachers to children?
1. 1:8
2. 8:1
3. 40:5
4. 2:5
What is the ratio of green circles to red circles in simplest form?
1. 1:2
2. 2:1
3. 4:2
4. 2:4
If 5 books are purchased for $40, how much will it cost for 2 books?
1. $16
2. $20
3. $12
4. $15
If the triangles are similar to each other, what is the length of side x?
1. 2 ft.
2. 1 ft.
3. 4 ft.
4. 5 ft.
In the scale drawing for Eric's new tree house, the dimensions of his tree house are 5 inches by 7 inches. The actual length of the longer side of the bedroom is 14 feet. What is the area of the tree house?
1. 140 square ft.
2. 10 sq. ft.
3. 15 sq. ft.
4. 120 sq. ft.
Wendy answered 27 of 30 questions right on her last science test. At the same rate, how many would she expect to get right on her next test if there are 80 questions on the test?
1. 72 questions
2. 70 questions
3. 65 questions
4. 50 questions
Find the value of g in the following proportion.
1. 17
2. 12
3. 7
4. 8
ΔABC is similar to ΔDEF. What is the length of line segment AB?
1. 1.95 inches
2. .21 inches
3. 1.3 inches
4. .85 inches
Trapezoids ABCD and EFGH are congurnt to each other. Which pair of angles given are congruent?