Identify the variables which are in direct proportion.
1 The number of people working and the quantity of work (each one doing the same quantity of
work)
2 The number of people working and the time to complete a given work.
3 The number of days worked and the quantity of work (keeping number of people the same).
4 Interest on money and the amount invested. 5Interest and the rate of interest.
6 Commission on sale and amount of sale.
7 Income tax and the income.
give the
Answers
Answer:
1. inverse proportion
2. inverse proportion
3. inverse proportion
4. direct proportion
5. direct proportion
6. direct proportion
7. direct proportion
Step-by-step explanation:
Direct proportion: Both quantities have similar changes.
Inverse proportion: When one quantity increases, the other quantity decreases.
1. As the number of people working increases, the quantity of work decreases.
2. As the number of people working increases, the time to complete the work decreases.
3. As the number of days worked increases, quantity of work decreases.
4. As the amount invested increases, the interest also increases.
5. As the rate of interest increases, interest increases.
6. As the amount of sale increases, the commission also increases.
7. As the income increases, income tax also increases.