There is no equivalence.
A megabyte is a measure of data while a minute is a measure of time. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.
240 MB = 0.24 GB
There are 245,760 kilobytes (KB) in 240 megabytes (MB).
how many minutes to make 1mb
7 HOURS
It depends on the quality.
You are comparing two entirely unrelated units of measure. You might as well ask how many days there are in PI for all the sense it makes to compare minutes to megabytes.
3:11 sec.
None. The units are incompatible.
A 650 MB CD-R can hold 74 minutes of music. A 700 MB CD-R can hold 80 minutes of music.
On a modern 100Mb (million bits/second) broadband connection a megabyte transfers in 80 milliseconds (1.333E-3 minutes).
The answer depends on 800 MB of WHAT: low quality audio or high definition video?
240 seconds is four minutes.