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Solution: The average of the 4 numbers is: (x + x + 5 + x + 3 + x + 12)/4,
(x + x + 5 + x + 3 + x + 12)/4 = 13
(4x + 20)/4 = 13
x + 5 = 13
x = 8
- by Heimer
Wed Jul 10, 2019 1:47 pm- Forum: Problem Solving
- Topic: new exercise
- Replies: 1
- Views: 430
new exercise
The numbers of products a store sold on 4 consecutive days were x, x + 5, x + 3 and x + 12. If the average of the products sold was 13, what is the value of x?
(a) 4
(b) 6
(c) 7
(d) 8
(e) 11
- by Heimer
Wed Jul 10, 2019 1:47 pm- Forum: Problem Solving
- Topic: new exercise
- Replies: 1
- Views: 430