One rule of thumb in the fast-food restaurant business is a "4 times markup": The price of a food item should be four times the price of the ingredients used in making the item. If the cost of ingredients used in making a taco is 1.5 dollars, what should be the price of the taco?

The price of taco should be $6

Step-by-step explanation:

The rule is that the price of a food item should be four times the price of the ingredients used in making the food item.

mathematically,

where is the price of the food item

is the price of the ingredients

If the price of ingredients for making taco is 1.5 dollars

price of taco = ?

substituting into the equation

= 4(1.5) = $6