Answer:
end of year 1
interest = 200 * 10 / 100 * 1
= principal * rate * time / 100
= 20
adding to the principal + interest
amount for second year : 200 + 20 = 220
now calculating interest for second year
interest = 220 * 10 /100 * 1
= 22
final amount after 2 years is
220 + 22
= $242 is the answer!