Question

You buy 60 of your favorite songs from a Web site that charges ​$0.99 for each song. What is the cost of 60 ​songs? Use mental math.

Answer 1

$59.4

Explanation:

Round up: 60*1 = $60. Everytime you add $0.99, you subtract off a penny, so you will subtract off 60 pennies. 60 cents from the original answer, so 60-0.6=59.4.