The difference between a number divided by 3 and 4 is 20.
\(*\\
x-\ number\\\\
\frac{x}{3}-4=20\ \ \ \ |Multiply\ by\ 3\\\\
x-12=20\ \ \ \ |Add\ 12\\\\
x=32\\\\Number\ is\ equal\ to\ 32.\)
Let, the number be "a"
Now, according to the question,
\(\frac{a}{3} - 4=20\)
\(\frac{a-12}{3} =20\)
\(a-12 =20*3\)
\(a-12=60\)
\(a = 60 + 12\)
\(a = 72\)
So, the number is 72