You are given the following prices of US Treasury Strips (discount or zero coupon bonds):

Maturity	Price (per $100 Face Value)
1	$98.8
2	$97.5
3	$95.6
4	$93.1

Suppose you are offered a joint venture drug development project which returns the following (assume certain) cashflows:

• $100m at the end of year 2
• $150m at the end of year 3
• $200m at the end of year 4

If the project requires a staged investment of $200m today, and another $200m investment 1 year from now, what is its NPV using the spot rates computed above. (Note: Your answer should be expressed in units of millions of dollars.)

$_____ million

Show the work, please.