Answer: $21.60
Step-by-step explanation: This is a similar way I solve this problem..
You take 20%, notice is it 20% of 100%, our 100% in this case is $27.00, our 20% is missing.. so.. divide 27.00 by 5, because 5 20%'s is 100%, after you divide by 5 you will end up with $5.40, so we know that 20% of $27.00 is $5.40..
Take $27.00 and take $5.40 away, and you will be left with 21.60
20%x5=100%
27.00/5=5.40
27.00-5.40=21.60
Coretta's pair of jeans is $21.60 when it is on sale for 20% off.