21 questions. 45 minutes. No calculator.
Pure problem-solving. No geometry. No data sufficiency. Just math reasoning at its core.
The bedrock of Quant. ~30% of questions test these directly. Master them or nothing else matters.
Trap: 20% increase then 20% decrease ≠ original. It's 96%.
The #1 most tested topic in Data Sufficiency. Know these cold.
The ratio multiplier: if ratio is 3:5, values are 3k and 5k. Find k.
The largest Quant topic. Equations appear in nearly every question. This is non-negotiable.
Key insight: n equations with n unknowns = solvable (usually).
Most common trap: forgetting to flip the inequality sign.
The ONLY geometry on the GMAT Focus Edition. No triangles, no circles.
Translation is the skill. Read the English, write the equation, solve. ~25% of Quant.
If A takes 6 hrs and B takes 3 hrs, together: 1/6 + 1/3 = 1/2 → 2 hours.
High-value topics. Counting + probability + sets = 15-20% of Quant.
One hour after Yolanda started walking from X to Y, a distance of 45 miles, Bob started walking along the same road from Y to X. If Yolanda's walking rate was 3 mph and Bob's was 4 mph, how many miles had Bob walked when they met?
Coins are to be put into 7 pockets so that each pocket contains at least one coin. At most 3 of the pockets are to contain the same number of coins, and no two of the remaining pockets are to contain an equal number of coins. What is the least possible number of coins needed?
Lloyd normally works 7.5 hours per day and earns $4.50 per hour. For each hour he works in excess of 7.5 hours on a given day, he is paid 1.5 times his regular rate. If Lloyd works 10.5 hours on a given day, how much does he earn for that day?
A tea shop offers tea in 5 different flavors and in 4 different package sizes. If the shop charges a different price for each combination, how many different prices must it list?
If x and y are positive integers, and x + y = 10, what is the maximum possible value of xy?