quot;You have a portfolio of the following options right now: 1 long call option with X=$52; 2 short call options with X=$55; and 1 long call option...

"You have a portfolio of the following options right now: 1 long call option with X=$52; 2 short call options with X=$55; and 1 long call option with X=$62. The current stock price is $55. Although you didn't record them in the right order, the deltas of the options are 0.15, 0.62, and 0.51.a. What is the delta of your portfolio?