Answer:
The original price of the laptop is 840
Step-by-step explanation:
Here, we want to calculate the original price of a laptop, given the amount that was paid off and the discount percentage enjoyed.
Firstly, let’s add back the 50 taken off. That makes a total of 50 + 664 = 714
Now, we remember he was also given 15% off. Let the price paid be x;
The 15% of x is equal the difference between x and the 714
Thus;
15/100 * x = x - 714
15x/100 = (x-714)
15x = 100(x-714)
15x = 100x -71400
100x-15x = 71400
85x = 71400
x = 71400/85
x = 840
A
The green is the starting place, when you move from a point on the green triangle to the blue one, you go 5 to the left and 3 down.
x - y = -3 x + y = 9
x y x y
-2 , 1 -2 , 11
-1 , 2 -1 , 10
0 , 3 0 , 9
1 , 4 1 , 8
2 , 5 2 , 7
Hope this helps.
