Last months cable bill was $60, while this months is $90. This was a difference (increase) of what percent?

50 % increase

Step-by-step explanation:

To find the percent increase, we take the new price and subtract the original price. Divide it by the original price

percent increase = (new - original) / original * 100%

= (90-60) / 60 * 100%

= 30/60 * 100%

=.5 * 100%

=50%