For improving beyond 48 on Quant, I think you don't need more concepts but you need to work on other things like time management, avoiding silly mistakes etc. Concepts are required to reach to 48 but to reach the next level you need practice and analysis.
GMATLiveTeach
Starts Oct 25

LIVE ONLINE CLASSES
Get Ready for GMAT Test Day Faster with Live Online Classes
with Josh Braslow, 20+ years in test prep
- Oct 25 · Josh Braslow
- Sun · 1:00 to 4:00 PM ET
- Nov 8 · Josh Braslow
- Sun · 9:30 AM to 12:30 PM ET
- Included
- 40 hours of live online classes + 6 months of TTP OnDemand
- Attend the first class for free
- Every class is recorded, so you never fall behind

















