Fast ez question hurryr

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Find the area of an equilateral triangle with a side of 6 inches