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 instru

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

in progress 0
Rose 3 weeks 2021-10-04T14:42:36+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-10-04T14:44:30+00:00

    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

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )