A store sells 3 notebooks at $2.49 each and 3 pens at $1.25 each. You pay with $20.00. How much change do you receive
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A store sells 3 notebooks at 2 dollars and 49 cents each and 3 pens at 1 dollar and 25 cents each. You pay with a 20 dollar bill. How much change do you receive?
First, let's calculate the total cost of the notebooks. We need to multiply 3 by 2 dollars and 49 cents. We can break this down as 3 times 2 plus 3 times 0.49, which equals 6 plus 1.47, giving us a total of 7 dollars and 47 cents for the notebooks.
Now let's calculate the total cost of the pens. We multiply 3 by 1 dollar and 25 cents. Breaking this down, we have 3 times 1 plus 3 times 0.25, which equals 3 plus 0.75, giving us a total of 3 dollars and 75 cents for the pens.
Now we add the cost of notebooks and pens to find the total purchase amount. We add 7 dollars and 47 cents to 3 dollars and 75 cents. When we add these amounts, we get 11 dollars and 22 cents as the total purchase amount.
Finally, we subtract the total purchase amount from the amount paid to find the change. We subtract 11 dollars and 22 cents from 20 dollars. When we do this subtraction, we get 8 dollars and 78 cents as the change you receive.
Let's review the complete solution. First, we calculated the cost of notebooks: 3 times 2 dollars and 49 cents equals 7 dollars and 47 cents. Second, we calculated the cost of pens: 3 times 1 dollar and 25 cents equals 3 dollars and 75 cents. Third, we added these amounts to find the total purchase: 7 dollars and 47 cents plus 3 dollars and 75 cents equals 11 dollars and 22 cents. Finally, we subtracted this from the amount paid: 20 dollars minus 11 dollars and 22 cents equals 8 dollars and 78 cents. Therefore, you receive 8 dollars and 78 cents in change.