Sara wishes to purchase a stereo system. She is offered the following payment options:

Option 1:
$0 down$ 429 in 1 year
$300 in 2 years Option 2:$ 80 down
$250 in 1 year$ 400 in 2 years

Determine the range of interest rates for which the present value of Option 2 is less than the present value of Option 1.

Lower limit of range = ?
Upper limit of range = ?