Mrs.davis bought 6 pounds of grapes for 18 dallors at this rate how much would 72 ounces of grapes have cost

Cost of 72 ounces of grapes is $13.5

Step-by-step explanation:

In order to solve his problem, we first need to get all the values in the same units.

  1 pound = 16 ounces

∴ 6 pounds= 16×6 = 96 ounces

Now by unitary method, we solve the question as follows:

price of 96 ounces of grapes = $ 18

price of 1 ounce of grapes = $ (18÷96)

∴ price of 72 ounces of grapes = $ [(18÷96)×72]

= (0.1875×72) =  $ 13.5

c. 85.35

Step-by-step explanation:

We have been given that Tyrell has a promotional code for a one time 10 off any purchase of 50 or more. Tyrell orders 2 new jerseys at 32.89 each and a hat for 23.99.

Let us find cost of 2 jerseys by multiplying cost of each jersey with 2 as:

Now we will add the cost of hat to cost of 2 jerseys to find total cost.

Now we will use promotional code to $10 off.

We are also told that Tyrell pays 7% sales tax on his purchase. So total cost will be 79.77 plus 7% of 79.77.

Therefore, the total cost of Tyrell's online purchase is 85.35 and option 'c' is the correct choice.