During a sale, every item in a store is 80% of its regular price. a. If the regular price of a T-shirt is $10, what is its sale price?
b. The regular prices of five items are shown here. Find the sale price of each item

Item 1
Item 2
Item 3
Item 4
Item 5

Regular price
$1
$4
$10
$65
$200

Sales price

Complete each statement.
a. 20% of 60 is __12
b. 25% of is 6
c. % of 100 is 14
d. 50% of 90 is __45
e. 10% of is 7
f. 30% of 70 is __21