Confusion about the duration of different phases of the cell cycle such as G1, G2 & S
It depends on the conditions, cell type or state of the cell.

I don't think anyone here can do better justice to the question for a beginner than this web page.

To show you why your answer is not answerable, by way of example: some cells exit the cell cycle and enter a stage called G0. This can be a permanent state for some cells, or, for instance, others may return to the cycle if they receive (external) signals.

Here is a very loose approximation, circles are to scale with respect to cycle time. Notice, for instance, the human circle is for an immortalized cell line under laboratory conditions, rather than for cells in your body. A neuron (brain) or an enterocyte (gut) have vastly different cell cycle states, so it's impossible to give you a single straight answer without misleading you totally.



Bonus food for thought: notice that the fraction of time cells spend on G1, S, G2 and mitosis is also different between different cell types.

Bonus food for thought #2: In fruit fly embryos (pictured bottom right in the above picture), you have an extreme example of unconventional (non-textbook) cycling. Rather than synthesizing new cytoplasmic materials, the size of the developing embryo is constant except for the replication of the genetic material. This happens in the growing larva for ~10 cell divisions, in thousands of cells. One of these cycles takes about 8 minutes to complete fully. That's an impressive time to copy a genome; most* bacteria can't do it this quickly!

(*any that I am aware of)