If Ram and Gohul can do a job in 10 days and 15 days independently. How many days would they take to complete the same job working simultaneously? Options
A) 5	B) 8	C) 4	D) 7	E) 6
If Total Work is X.   Ram rate of working=X/10 per day.   Gohul rate of working=X/15 per day.   Rate of work=(x/10)+(x/15)=30X/5X   =6 days   Answer is option 630 /5= 
<gadget id="calculator">30 /5</gadget>
<output>6</output>
6 days   Answer is option 6
<result>E</result>
If Ram and Gohul can do a job in 10 days and 15 days independently. How many days would they take to complete the same job working simultaneously?