Miss lmain Wants to purchase paper and notebook for a classroom. At dollar discount, he can buy packs of paper P for 1.25 each, and notebook, and for 2.50 each. This is a model by 1.25P plus 2.50 and evaluate for P = 10 and n = 30 to find how much it will cost Mr. Lmain to purchase 10 Packs of paper 30 notebooks.

1 answer

To calculate the cost of purchasing 10 packs of paper and 30 notebooks, we need to use the given model: 1.25P + 2.50

First, let's substitute P = 10 into the equation:
1.25 * 10 + 2.50

Multiply:
12.50 + 2.50

Add:
15

So, the cost of purchasing 10 packs of paper is $15.

Next, let's substitute P = 30 into the equation:
1.25 * 30 + 2.50

Multiply:
37.50 + 2.50

Add:
40

So, the cost of purchasing 30 notebooks is $40.

To find the total cost of purchasing 10 packs of paper and 30 notebooks, we need to add the costs of each separately.

Total cost = Cost of 10 packs of paper + Cost of 30 notebooks
Total cost = $15 + $40
Total cost = $55

Therefore, it will cost Mr. Lmain $55 to purchase 10 packs of paper and 30 notebooks.