Free GMAT Prep Hour: Expert Tackles an Official GMAT DS and Two-Part Question Bank

[@c1ay_tube_5050]

I think S is already negative, so you would add S instead of subtracting if that makes any sense

[@c1ay_tube_5050]

for the student and faculty problem

[@moneytrail5314]

Bro you too getting wrong I thought I was the only who miss one or two