Question

PLs help....................

Answer 1

12.5 hours

Step-by-step explanation:

the student worked one extra day, so they'll get an extra 15.

use this formula

h=hours

8h+15=115

8h+15-15=115-15

8h=100

8h/8=100/8

h=12.5

Answer 2

12.5 hours.

Step-by-step explanation:
115 - 15 = 100 \\frac{100}{8} = 12.5