Question

using a certain garden hose, liza can fill her fancy new bucket with water in 45 seconds. Unfortunately, Henry accidently makes a hole in the bucket, so if initially full, the bucket will now become empty in 1 minute. How long will it take to fill the bucket, considering it has a hole in it?

Answer 1

counting in seconds,
1/45 - 1/60 = 1/x
x = 180

so, it will take 3 minutes