Answer part b: c i’m in desperate need of 70 points.

The difference between buying online and buying in store is $12.50. The difference between the markups themselves is $2.50. Because the markup of buying in store is more than buying online, we can tell that buying in store costs more than buying online.

Step-by-step explanation:

The markup of buying online is $40 (25% of 160). Because of this, we'll add $40 to the original price, which means that buying online would cost you $200. On the other hand, the markup of buying in a store is $52.50 (35% of $160). This means we'll add $52.50 to the original price, giving us a total of $212.50. We now know that buying at the superstore costs $212.50, and buying online costs $200. To find the difference, we subtract $200 from $212.50. We get $12.50, which means that the difference in total price is $12.50.

Next, we're trying to find out the difference between the markups themselves. Since we know that the markup of buying online is $40, and the markup of buying in store is $52.50, we have to subtract $40 from $52.50. We are left with $2.50. Therefore, the difference between the markups is $2.50.

We can draw the conclusion that because the markup price for buying in store is more than the markup price of buying online even though they (without markup) cost $160, it'll cost more in store.