Equations & Inequalities Quiz

If the length of a rectangle is twice its width and the perimeter is 30 units, what is the width?

• 5 units

• 10 units

• 7.5 units

• 15 units

A number is decreased by 12, and this result is then multiplied by 5. The final result is 40. What is the original number?

• 16

• 14

• 12

• 10

• 9 units

• 15 units

• 3 units

• 5 units

A number is tripled and then increased by 10. If the result is 40, what is the original number?

• 10

• 30

• 15

• 20