I want an formula in excel to find out number of days present per month an perticular worker

You can use the EDATE function to quickly add or subtract months from a date. The EDATE function requires two arguments: the start date and the number of months that you want to add or subtract. To subtract months, enter a negative number as the second argument. For example, =EDATE("9/15/19",-5) returns 4/15/19.

Add or subtract dates - Microsoft Support

and

Excel Add Months to Date - Corporate Finance Institute

https://corporatefinanceinstitute.com > Resources
Nov 24, 2022 - Step 2: Use the =EDATE(C3,C5) formula to add the number of specified months to the start date. Where cell C3 is equal to today's date [the TODAY ...

How to Add Months to Date in Excel (Easy Formula)

https://trumpexcel.com > add-months-to-date-excel
Add Months to a Date · start_date - the date for which you want to get a certain number of months before or after it · months - the number of months before or ...

Add months to date - Excel formula ' Exceljet

https://exceljet.net > Formulas
To add a given number of years to a date, you can use the EDATE function. In the example shown, the formula in D5 is: =EDATE(B5,C5)

If the column is absolute, then use the $ before the first character and if the row is absolute use the $ before the second character in your cell designation. If BOTH column and row are absolute, use the $ before both the column and row character.

Examples: $A1, A$1, $A$1

Using IF function or filter to generate the membership type and create a VLOOKUP for that..... Or using filter function you could create a pivot and insert the specific formula per type in that.

The formula is 200/700 equals the percentage;if you're in columns a, b, and c, the formula in c1 will look like:
=b1/a1.

Then you can format the cell to show the number (.2857) as a percentage (28.57%).

create a dummy column (columnC) containing columnA&columnB
use countif at columnD to count the number of observations per combination of columnA and columnB (in particular those with blank entries in columnB).

for example, cell A1 has date (01-01-2008) and cell A2 has current date (08-24-2008) and cell A3 shows total days, is that you want to know? if yes, apply formula as under...

cell A3......(properties set as General to show digits)................ =SUM(A2-A1)

Let's start with the 1st equation. I assume you want to be able to recalculate by changing the number of pages.

Put 65 in cell a1.
360 in b1
In C1, put the formula =a1/b1 that's your book thickness
In D1, put .02 for the cover
In E1, put the formula =C1+D1

Now you can change A1, B1,or D1 and the Total thickness gets recalculated automatically. Be careful not to type numbers into C1 or E1, or you lose the formula.

The same for the other equations - a cell for each number ("variable") and another cell for calculations.

Once you've verified the results, then you can get fancy and add titles above each field to make it easy to remember what goes where.

You may need to change the cell format to control the number of decimal places, or thousands commas. Right click on a cell and select format to see the choices you have.

Keep a backup copy of the spreadsheet in case someone (not you, of course) makes a mistake and overwrites the formula cells. You can also look into "protecting" cells to keep them from being changed.

Hope that helps.

Not sure if I get your problem. Do you mean the SUM() formula with the row does not work?
That is the simplest solution if you are entering the monthly numbers per month.

If you have all these values and need to sum them up based on the current month, you need to use the MONTH() with the NOW() formulas to get a month offset and use a relative reference for the SUM() formula.

CHOSE THE PERTICULAR CELL WHERE THE SUM IS GOING TO BE DISPLAYED AND HYPERLINK IT IT WITH SHEET 2

Yes you can and there are two choices. The simple solution is to label a cell "divide by" and put your number in that filed. Then, by changing only that, your answer (in a separate cell) will be available.
There are more complex solutions -assuming your divide by number had some rhyme and reason that could be put in place but.....try this first and at a later date go back and play. Learning to do that will give you more than a fair amount of Excel expertise....something you may find fairly valuable as you continue on using Excel. FYI...I have developed full blown applications on Excel....it is an excellent tool. Hope this helps....Tango.