That is the correct answer and what I got also. But they are saying the S1 = 7<38.7 kVA and S2 = 9<-49.5 kVA.
These are the numbers I got:
For motor 1: P1 = 5.46kW, Q1 = -4.38kVAR, and S1 = 7<-38.7 kVA
For motor 2: P2 = 5.85kW, Q2 = +6.84kVAR, and S2 = 9<+38.7 kVA
A lagging...