Last week you bought a new game, which cost 40 dollars. This weekend you can do three things:

1) Play the game,

2) have dinner with friends,

3) go for a run.

If you play the game, you cannot have dinner with friends, but you can combine going for a run with either playing the game or having dinner with friends. The returns from the activities (in dollars) are:

Game: 180, excluding the price of 40

Dinner: 50, including the cost of the dinner (cost is 20)

Run: 100

Having dinner with friends always motives you to run faster. So, if you combine dinner with friends, the returns of running are 105 instead of 100. What is the maximum return you can obtain this weekend?