Amy finished 15% of the job, Beth finished 20% of the remaining of the job, then Cathy finished 12% of the remaining of the Job. What percent is sitll not done?

so confusing I got 53 percent

After Amy, .85 remained.

After Beth, .80*.85 = .68 remained
After Cathy, .88*.68 = .5984 remained

So, 59.84% of the job remained undone.

So, how did you arrive at 53%/ It's always good to show your work, so we can check to be sure your logic is correct.

To find the percentage that is still not done, we need to subtract the total percentage completed from 100%.

First, let's calculate the total percentage completed by Amy, Beth, and Cathy.

Amy completed 15% of the job.
Beth completed 20% of the remaining job after Amy. So, Beth completed (20% of 85%) = 17% of the job.
Cathy completed 12% of the remaining job after Amy and Beth. So, Cathy completed (12% of 83%) = 9.96% of the job.

Now, let's calculate the total percentage completed by all three:

Total % completed = Amy's % + Beth's % + Cathy's %
= 15% + 17% + 9.96%
= 41.96%

To find the percentage still not done, we subtract the total percentage completed from 100%:

Percentage still not done = 100% - Total % completed
= 100% - 41.96%
= 58.04%

Therefore, the percentage that is still not done is 58.04%.