Answer:
(D) $694.51
Explanation:
$400 was deposited with 3.5% simple interest.
2 years interest
= 3.5/100 x 400 x 2
= $28
Amount after 2 years
= 400 + 28
= $428
$250 was deposited with 3 1/4 compounded interest.
3 1/4 = 3.25
Amount at the end of 2 years
= 250 (1 + 3.25/100)²
= $266.51
Total amount after 2 years
= 428 + 266.51
= $694.51