Question 732158
It is an AP

a=1
d=1
Sn=$100= 10000 cents

Sn=n/2[2a+(n-1)d]

10000=n/2[2+n-1]
20000=n^2+n

n^2+n-20000=0

Find the roots of the equation by quadratic formula							
							
a=	1	,	b=	1	,	c=	-20000
							
b^2-4ac=	1	+	80000				
b^2-4ac=	80001						
{{{	sqrt(	80001	)=	282.84	}}}		
{{{x=(-b+-sqrt(b^2-4ac))/(2a)}}}							
{{{x1=(-b+sqrt(b^2-4ac))/(2a)}}}							
x1=(	-1	+	282.84	)/	2		
x1=	140.92						
{{{x2=(-b-sqrt(b^2-4ac))/(2a)}}}							
x2=(	-1	-282.84	) /	2			
x2=	-141.92						
Ignore negative value										Minimum tickets to be sold = 141 tickets	
							
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