A man can do a piece of work in 15 days and his son do the same work in 12 days, both are working together for 5 days after that son left the job. then in how many days a man alone complete the remaining work?  Choose the correct option:	A) 2.58 DAYS	B) 2.33 DAYS	C) 5.69 DAYS	D) 8.85 DAYS	E) 2.36 DAYS
First take LCM of (15,12) = 60; Total work =60; A man one day work = 60/15= 
<gadget id="calculator">60/15</gadget>
<output>4</output>
4; son's one day work=60/12= 
<gadget id="calculator">60/12</gadget>
<output>5</output>
5; One day work of both man+son= 4+5= 
<gadget id="calculator">4+5</gadget>
<output>9</output>
9; Total work completed in 5 days= 5*5= 
<gadget id="calculator">5*5</gadget>
<output>25</output>
25; remaining work is= 60 - 25= 
<gadget id="calculator">60 - 25</gadget>
<output>35</output>
35; remaining work completed by a man in= 35/15= 2.33 days. Answer =2.33 DAYS
<result>B</result>
A man can do a piece of work in 15 days and his son do the same work in 12 days, both are working together for 5 days after that son left the job. then in how many days a man alone complete the remaining work?