Question

15. A student finishes the first half of an exam in 315
of the time it takes him to finish the second half of
the exam. If the total time he takes to finish the
exam is 48 minutes, how many minutes did he take
to finish the first half of the exam?
A) 18
B) 24
C) 36
D) 40
E) 30
please explain! ​

Answer 1

Answer:

b. 24

Step-by-step explanation:

Equation:

x + (2/3)x = 60 minutes

(5/3)x = 60

5x = 180

x = 36 minutes

(2/3)x = (2/3)36 = 24 minutes (time spent on the 1st half of the exam)

Answer 2

Answer:

let the time taken be to complete the exam