Eshan and Mary each wrote two or three poem every day over a period of time eshan wrote 43 poems while Mary wrote 61. The number of days in this period is.....	Choose the correct choice from the following answers:
A) 19	B) 21	C) 20	D) 18	E) 17
suppose, Eshan writes 2poems in first 18days   18*2= 
<gadget id="calculator">  18*2</gadget>
<output>36</output>
36.   2poems in next 2 days 2*2= 
<gadget id="calculator">2*2</gadget>
<output>4</output>
4, 36+4=40   and 3poems in next 1day  1*3= 
<gadget id="calculator"> 1*3</gadget>
<output>3</output>
3, 40+3=43   So, Ultimately he takes (18+2+1)= 
<gadget id="calculator">(18+2+1)</gadget>
<output>21</output>
21days to write 43 poems.   now suppose, Marry writes 3poems in 1st 18days   18*3= 
<gadget id="calculator">  18*3</gadget>
<output>54</output>
54   2poems in next 2days   2*2= 
<gadget id="calculator">  2*2</gadget>
<output>4</output>
4, 54+4=58   3poems in next 1 day   1*3= 
<gadget id="calculator">  1*3</gadget>
<output>3</output>
3, 58+3=61   So ultimately marry takes   (18+2+1)= 
<gadget id="calculator">  (18+2+1)</gadget>
<output>21</output>
21days to write 61poems.   ANSWER:21
<result>B</result>
Eshan and Mary each wrote two or three poem every day over a period of time eshan wrote 43 poems while Mary wrote 61. The number of days in this period is.....