Answer:
$3.5
Step-by-step explanation:
Adding 10% to a number is the same as multiplying it by 1.1
To find $15 with 10% sales tax, the equation is 15 * 1.1 = 16.5.
Mary's change will be the $20 bill minus the price of the item, which is the equation 20 - 16.5 = 3.5.
Answer:
$3.5
Step-by-step explanation:
15.00 times 10 divided by 100 equals $1.5 which is the sales tax. $15 plus $1.5 equals $16.5. $20 minus $16.5 equals to $3.5.
