please do it quickly, i do rates

Consider the following two cash flows: CF#1: t=1: X; t-3: X; t=5: -2X CF#2: t=1: $100; t=2: $-200; t-3: $-300; t=4: $500 Suppose the interest rate between t=0 and t=1 is 2% and it increases from there by 1% each year. Find the X that makes the two cash flows equivalent (within $20 of which of the following)? 275 315 355 395 None of the above