Let's assume
people were in the original group of winners as x
A group of winning ticket holders share equally 90,000,000 lottery
Before the money is divided, three more winning ticket holders are declared
so, total number of winning tickes =x+3
each persons share is reduced to 5,000,000
so, total money =5,000,000*(x+3)
and this must be equal to total money
[tex]5000000(x+3)=90,000,000[/tex]
now, we can solve for x
and we get
[tex]x+3=18[/tex]
Subtrac both sides by 3
[tex]x+3-3=18-3[/tex]
[tex]x=15[/tex]
so,
number of people were in the original group of winners is 15 ...........Answer