Understanding Ratios

This video tutorial explains how to solve ratio problems when given one quantity. It covers three examples: the ratio of boys to girls, adults to children, and money sharing among individuals. The video demonstrates how to find one part of the ratio and use it to calculate the other parts, ensuring a clear understanding of ratio concepts.

In a class, the ratio of boys to girls is 2:3. If there are 75 girls, how many boys are there?

• 50

• 45

• 30

• 60

If the ratio of boys to girls is 2:3 and there are 75 girls, what is the total number of students?

• 125

• 100

• 150

• 120

In the boys and girls problem, if one part is 25 students, how many parts represent the number of girls?

• 3

• 2

• 4

• 5

At a concert, the ratio of adults to children is 2:3. If there are 786 children, how many adults are present?

• 600

• 500

• 524

• 550

Given the ratio of adults to children is 2:3 and there are 786 children, what is the total audience size?

• 1310

• 1300

• 1320

• 1280

In the concert problem, if one part is 262, how many parts represent the number of adults?

• 2

• 4

• 1

• 3

Leah, Chloe, and Maya share £400. Leah receives £90, which is two parts of the ratio. How much does Chloe receive if her share is three parts?

• £135

• £150

• £120

• £140

If Leah receives £90 and Chloe receives £135, how much does Maya receive from the total £400?

• £175

• £180

• £185

• £170

In the money distribution problem, what is the ratio of Leah's share to Chloe's share?

• 3:2

• 2:1

• 2:3

• 1:2

If Leah's share is £90, which is two parts, what is the value of one part?

• £55

• £40

• £45

• £50