Between 2000 and​ 2010, the percentage of households with cordless phones increased by 13.7​% to 82​%. What percentage of households had cordless phones in​ 2000?
About _____% of households had cordless phones in 2000.

NOTE: Simply subtracting 13.7-82 is INCORRECT and has been marked incorrect.

Question Help: To find what percentage of households had cordless phones in​ 2000, translate the​ "increased by" statement to an​ "of" statement. Let A be the percentage of households in 2000 and B be the percentage of households in 2010. What is the proper​ "of" statement?