Answer
PART A
Final Cost = $325
PART B
Price after this further discount is applied = $292.5
Step-by-step explanation
PART A
Mia needs a computer that is $500
The computer is 35% for those that purchase on Saturday.
Final Cost = (Original Price) - (Discount)
Original Price = $500
Discount = 35% of $500 = 0.35 (500) = $175
Final Cost = (Original Price) - (Discount)
Final Cost = 500 - 175 = $325
PART B
There is a further 10% discount for those that arrive at 9:00 am
Price after this further discount is applied = 325 - (10% of 325)
= 325 - [(0.1)(325)]
= 325 - 32.5
= $292.5
Hope this Helps!!!