The cost of the sheets is less for the second example, the second example is the better deal.
Consider the first example:
Here, A brand of sheets is on sale for “Buy one get one at 50% off”. If each sheet costs $18.00.
So, the value of the first sheet will be $18,
And since the other sheet is at 50% off .
That is it will be half of the original value
= 50/100 * 18
=9
Therefore, the cost of two sheets
=$18 + $9
= $27.
So, Six sheets will cost
=$27+$27+$27
= $81
Cost of six sheets will be $81
Now, consider the second example
In the second example sheets are 30% off.
So, 30% of 18
= $6.
Subtract that value from 18 and you will get $12.
So, cost of one sheet = $12.
cost of 6 sheet
= $12×6
= $72
In the first example, Six sheets costs $81, while in the second example six sheets cost $72.
Since the cost is less for the second example. So, the second example is the better deal.