Question 257445
We can write an equation based on the given information. Let S = snow white. The 7 dwarfs + snow white = 8 people.
{{{((7*20) + S)/8 + 3.50 = S}}}
multiply all by 8 to get
{{{140 + S + 28 = 8S}}}
subtract S and combine like terms to get
{{{168 = 7S}}}
diving, we get
 S = $24