Answer:
see explanation
Step-by-step explanation:
note that 3.28 = 2 × 1.64
This could be a geometric sequence with common ratio r = 2
To obtain the next term multiply the previous term by 2
3.28 × 2 = 6.56
6.56 × 2 = 13.12
1.64, 3.28, 6.56, 13.56 ← first 4 terms in sequence
Answer: 30% or $ 135.
Explanation
The mark up is generally expressed as a percentage. It is the percent increase on the cost.
We can calculate the mark up from cost to sale price of the item as a composition of steps. That is what the next steps show.
1) First step: calculate the the price after the item is marked down by 10%:
Selling price: $ 650
Mark down = 10% of 650 = 0.10 × $ 650 = $65
Price after mark down: $ 650 - $ 65 = $ 585.
2) Second step: difference of the price marked down to the cost:
$ 585 - $ 450 = $ 135
3) Calculate the percent mark up:
% mark up = (mark up / cost) × 100 = ($ 135 / $ 450) × 100 = 30%
8.5
5 , 8 , 8 , 8 , 8 , 9 , 9 , 9 , 10 , 10
Cross one from the left and then one from the right
8 , 8 , 8 , 8 , 9 , 9 , 9 , 10 , 10
8 , 8 , 8 , 8 , 9 , 9 , 9 , 10
8 , 8 , 8 , 9 , 9 , 9 , 10
8 , 8 , 8 , 9 , 9 , 9
8 , 8 , 9 , 9 , 9
8 , 8 , 9 , 9
8 , 9 , 9
8 , 9
Since you have 2 numbers left, find the number right inbetween the two
