Moses wanted to solve this problem.

a box of spaghetti at the grocery store is purchased for $1.60 wholesale and is marked up by 60 percent. then, the store marks down the item by 20 percent. a customer wants to buy three boxes of spaghetti. how much will the customer pay, including paying 8 percent sales tax?

Customer will pay $ 6.63552.

Step-by-step explanation:

Given,

The original cost of one box = $ 1.6,

After marking up 60 % the cost of one box = 160 % of $ 1.6

Also, after mark down by 20 %,

The price of one box = (100-20)% of $ 2.56 = 80 % of $ 2.56

Thus, the price of the three boxes = 3 × $ 2.048 = $ 6.144,

Now, tax percentage = 8 %,

Hence, total cost of the boxes after paying the tax = 108 % of $ 6.144

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40