That would be d.
Keith exercises x - 3 hours and 2 tines this is 2(x - 3)
Answer:
16.67% of cases of tapes were sold.
Step-by-step explanation:
We are given the following in the question:
Number of cases of tapes sold = 24
Thus is 20% of tapes left.
Let x be the total number of tapes left.
Thus, we can write:

Thus, total number of tapes =

Percentage of tapes sold =

Thus, 16.67% of cases of tapes were sold.
Step-by-step explanation:
NO = TS
- 20 = 3x-7
- 20+7 = 3x
- 27 = 3x
- 27/3 = x
- 9 = x
Hope this helps you.
Number 1 is B, number 2 is C and number 3 is A