Answer:
E started with 26 books, sold 13 books, bought 17 more books, and ended with 30 books
Step-by-step explanation:
E has _ books: x
E Sells 1/2 of that _ books: x/2
E buys 17 books and now had 30: (x/2) + 17 = 30
30 - 17 = 13
13 x 2 = 26
x/2 = 26
13 + 17 = 30 <-- checking work
My guess is that x = 13
You didn't clarify what exactly you are looking for but I hope this helps clarify some steps of the problem anyway!
(1/5)x + 8
This will find 20% of the wholesale cost and add the $8 markup, where 'x' is the wholesale cost
Answer:
The answer is:
30 minutes.
Step-by-step explanation:
We are given the following information:
at 160 m/min, tool life = 5 min.
at 120 m/min, tool life = 17 min.
This means that as the speed reduced from 160 m/min to 120 m/min, the tool life increased from 5 min. to 17 min, hence the difference between the changes are:
speed = 160 - 120 = 40 m/min
tool life = 17 - 5 = 12 min.
Therefore, it can be concluded that a change of speed of 40 m/min, increases the tool life by 12 min.
40 m/min = 12 min
∴ 1 m/min = 12/40 min.
∴ 100 m/min = 12/40 × 100 = 0.3 × 100 =30 min.
Answer: 0
Step-by-step explanation: hope it helps
Let the number be x.
Therefore, by the problem
x/6-(-3) = 12
or, x/6+3 = 12
or, x/6 = 12-3
or, x/6 = 9
or, x = 9 × 6
or, x = 54
The number is 54.
