An elephant fell into a wall of depth 20mts.Everyday it climbs 4mts but at the end falls by 2mts.Find the number of days it would take for the elephant to get out of the wall	Select:  A) 7 days  B) 9 days  C) 8 days  D) 10 days  E) 11 days
4-2= 
<gadget id="calculator">4-2</gadget>
<output>2</output>
2   2*8= 
<gadget id="calculator">2*8</gadget>
<output>16</output>
16   16(8 days)+4(9th day)=20   8+1= 
<gadget id="calculator">8+1</gadget>
<output>9</output>
9 days   ANSWER:9 days
<result>B</result>
An elephant fell into a wall of depth 20mts.Everyday it climbs 4mts but at the end falls by 2mts.Find the number of days it would take for the elephant to get out of the wall