algebra
2 articles tagged algebra.
Ratios: Use the MULTIPLIER and Stop Guessing
A ratio of 3:5 does not mean 3 and 5. Add one unknown multiplier and GMAT ratio questions shrink to one short line of math.
Stop Solving for x When the Question Doesn't ASK for x
The GMAT asks for x + y and you spend three minutes finding x. Learn to spot the real target and reach it in seconds, not minutes.