Susana bought a laptop for $500. it was marked $50 off because it was out of the box and slightlly scratched. she also got 20% student discount, which was taken off the original price. what was the original peice of the laptop? write and solve an equation to answer the question

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%