Ratio and Proportion (Y7)

The ratio 108 seconds:3 minute simplifies to

• 18:30

• 18:1

• 3 : 5

• 6:5

39 students went to a field trip. 21 students went to the Amusement Park and 18 students went to the Water Park. What is the ratio of the number of students who went to the Amusement Park to the number of students who went to the Water Park?

• 3:9

• 7:6

• 7:9

• 7:3

Mrs. Smith uses 240cm long ribbon to decorate gifts. She cuts it into three pieces in the ratio 1 : 2 : 5. Work out the length of the longest piece of ribbon.

• 30 cm

• 150 cm

• 80 cm

• 200 cm

A bag contains come blue and red counters. The ratio of blue counters to red counters is 2 : 3. There are 14 red counters. How many blue counters are there?

• 21

• 7

• 5

• 15

Three angles of a triangle are in the ratio 2 : 3 : 5. The smallest angle is 50⁰. Work out the size of the largest angle.

• 115⁰

• 125⁰

• 135⁰

• 145⁰

When Zander makes orange juice, he adds 20 mL of orange juice for every 90mL of cold water. Zander's sister, Ella, adds 45 mL of orange juice for every 180 mL of cold water. Whose mixture will taste more orange?

• Zander's orange juice

• Ella's orange juie

• The two will taste exactly the same.

• It cannot be determined.

Zalika bought five packs of sweets for $15. Alice bought a dozen packs of the same sweets. How much did Alice pay?

• $45

• $42

• $36

• $30

What is the significance of understanding proportions in everyday life?

• It helps in making comparisons, scaling recipes, and solving problems in finance, cooking, and more.

• It is only useful for mathematical calculations and has no real-life applications.

• It is primarily important for understanding geometry and shapes.

• It is only relevant for professional chefs and financial analysts.