I used this site as my guide for calculating. Math is below, but the result I get is 3.43 . I recommend you check yourself using the guide to ensure it’s correct!
(4x(85+46))
+ (3x(36+22))
+ (2x(34))
/
(155 + 68)
=
(524 + 174 + 68)
/
(223)
=
766/223
= 3.43