Answer:
You make 5.50 each 10 servings or tub you use. To find how much in a day multiply $5.50 by the number of tubs you use or number of 10 servings you sell.
Step-by-step explanation:
I think there is a typo and each empty cone costs $0.05 or 5 cents.
You buy a 1 liter tub for $2 and fill ten cones with the tub costing 10*0.05 = 0.50 for the cones. This means your total cost is $2.50 per tub (or 10 servings).
But you plan to sell the servings for 0.80 cents each. This means for 1 tub or 10 servings you'll make 10*0.8 = $8.00. You'll make $8.00.
Your profit is how much you make minus your costs.
$8.00 - 2.50 = $5.50.
You make 5.50 each 10 servings or tub you use.