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!