Tony Stark is trying to improve his Iron Man suit by increasing its power. One modification will cost $350 million, of which the US Government will pay $110 million, and his contractor will offer a 30% discount on the entire cost of the project. If he has half the remainder in petty cash, how much does he still need to raise?' The total cost is $350 million.

The US Government is offering to pay $110 million.

A contractor is offering to reduce the total cost by 30%.

Tony has enough money to pay the remaining costs out of petty cash.