Answers:
- Discount price = 280.50 dollars
- Amount lost = 49.50 dollars
================================================
Explanation:
If it's sold at a loss of 15%, then the store owner loses 0.15*330 = 49.50 dollars
So it was sold for 330- 49.50 = 280.50 dollars
----------------------------
An alternative method:
If the store owner loses 15%, then they keep the remaining 85% since 15%+85% = 100%.
85% of 330 = 280.50 dollars is the discount price
This means 330-280.50 = 49.50 dollars is the amount lost.
All you have to do is take $630 and multiply it by 3.9% to get $24.57. Then take $1,047.69 and subtract the initial amount in the account ($630) to get $417.69 then divide that by the interest per month I assume ($24.57) to get 17. So I believe that the account has been held for 17 months. To check simply take $630 multiply it by 3.9% then multiply that by 17. I hope this helped if not please tell me where I went wrong.
Your Welcome :)
We can use the equation 
to find the length of the side of a square.
<u>Solution:</u>
Given that, the perimeter of a square is equal to the perimeter of an equilateral triangle.
The length of a side of the square is given by "x"
And the length of a side of the equilateral triangle is given by "y"
Finding the equation to determine value of "x"
<em><u>The perimeter of a square with side "x" is given as:</u></em>
<em><u>Perimeter of a equilateral triangle with side "y" is given as:</u></em>
Given that perimeter of a square = perimeter of an equilateral triangle
Hence, we can use the equation to find the length of the side of a square.
276-195=81
So the answer is 81
