Alg 2 Topic 4 lesson 5 pretest

Paige can complete a landscaping job in 6 hours. Malia can complete the same job in 4 hours. Working together, how long would it take them to complete the job? Write your answer as an integer or decimal.

• extraneous root

Mathematical Equivalence

ON

• 2
• 8
• 7
• 8.125
• -8

A boat travels 8 miles upstream in the same amount of time it can travel 12 miles downstream. In still water the speed of the boat is 5 mi/hr. What is the speed of the current?

• 1 mi/hr

• 2 mi/hr

• 2.8 mi/hr

• 3.1 mi/hr

• 5 mi/hr

• no solution; extraneous root