Mandy saw the advertisement by top bakery. She wanted to buy 100 fruitcakes for her party. How much would Mandy have to pay altogether? Each fruitcakes cost $1.50 buy 10 fruitcakes and get 2 free fruitcakes
Mandy wants to buy 100 fruitcakes, so she can take advantage of the "buy 10 fruitcakes and get 2 free" deal 10 times.
In each deal, Mandy buys 10 fruitcakes and gets 2 free fruitcakes. So in each deal, she pays for 10 fruitcakes - 2 free fruitcakes = <<10-2=8>>8 fruitcakes.
Therefore, she needs 100 fruitcakes / 8 fruitcakes per deal = <<100/8=12.5>>12.5 deals.
Since Mandy can't buy a fraction of a deal, she needs to round up to the next whole number of deals. So she will need to buy 13 deals.
Each deal costs 10 fruitcakes * $1.50 per fruitcake = $<<10*1.5=15>>15.
So in total, Mandy would have to pay $15 per deal * 13 deals = $<<15*13=195>>195 altogether. Answer: \boxed{195}.