Question

A traffic school class has three parts. In the first part, a film is shown that takes one fifth of the class time. In the second part, the instructor lectures for 70 minutes. In the final part, a test is given that takes one third of the class time

Answer 1

Answer:

2.5 hrs

Step-by-step explanation:

Given:

• Part 1= 1/5x

• Part 2= 70 min

• Part 3= 1/3x

Altogether:

• x=1/5x+70+1/3x
• x-x/5-x/3=70
• 7x/15=70
• x=15*70/7
• x=150 min = 2.5 hrs

Answer: traffic school class lasts 2.5 hrs