When a number is increased by 11%, the result is 89. What is the original number to the nearest tenth?

80.2

Step-by-step explanation:

Since the number is being increased by 11%, we can add 100% to it, and get 111%.

111%/100=1.11

1.11x=89

Then, divide by 1.11 on both sides

x=80.18018018 ...

Rounded to the nearest tenth,

x=80.2