It's 15.
(2)5+(2)5+(2)5 = 30
5+5+(2)5 = 20
(2)2+(2)2+5 = 13
5+5*2 = 15
Nevermind, it's actually 23. didn't see the shoelaces on the guys wrists in the last one… should've zoomed in.
5+(5+2+2)*2 = 23
And I missed the fucking sneakers on his feet. Goddamn it. OK
5+(5+2+2+5+5)*2
43
Oh well, 3 times and I finally got it. Good math, but poor observation.