Proportions and Applications Quiz

This video tutorial covers four examples of using proportions to solve real-world problems. It begins with calculating the perimeter of similar decagons, then adjusts a cookie recipe based on proportions. The tutorial continues with estimating student attendance at an event and concludes with determining the number of buses needed for a trip. Each example demonstrates setting up and solving proportions, emphasizing practical applications of mathematical concepts.

If the ratio of the sides of two similar polygons is 1:2, what is the ratio of their perimeters?

• 1:2

• 1:1

• 2:2

• 2:1

Given a smaller decagon with a perimeter of 76 cm, what is the perimeter of a larger decagon if the side ratio is 1:2?

• 38 cm

• 114 cm

• 152 cm

• 76 cm

How many cups of flour are needed to make 15 dozen cookies if 4 cups are needed for 5 dozen?

• 15 cups

• 12 cups

• 10 cups

• 8 cups

If a recipe requires 4 cups of flour for 5 dozen cookies, what is the equivalent rate for 10 dozen cookies?

• 6 cups

• 12 cups

• 10 cups

• 8 cups

What is the ratio of students not attending to the total number of students if 2 out of 3 students attend?

• 1:3

• 2:3

• 3:2

• 1:2

If 1,140 students are at a school, how many are estimated not to attend an event if 2 out of 3 attend?

• 570 students

• 760 students

• 760 students

• 380 students

How many buses are needed to transport 780 students if each bus holds 60 students?

• 12 buses

• 10 buses

• 15 buses

• 13 buses

If one bus can hold 60 students, how many students can 5 buses hold?

• 300 students

• 240 students

• 360 students

• 420 students

What is the equivalent rate of buses to students if 1 bus holds 60 students and there are 780 students?

• 12 buses

• 13 buses

• 14 buses

• 15 buses

If 60 students fit in one bus, how many students can fit in 13 buses?

• 780 students

• 720 students

• 800 students

• 840 students