Problem Solving

GMAT Question of the Day (Aug 1): Combinations and Critical Reasoning

By - Aug 1, 02:00 AM   Comments [1]

Math (PS) Carly has 3 movies that she can watch during the weekend: 1 Action movie, 1 Comedy, and 1 Drama. However, she needs to watch the Drama 3 times. Assuming Carly has time for 5 movies and intends to watch all of them, in how...

Read More

GMAT Question of the Day (Jul 28): Word Problem and Sentence Correction

By - Jul 28, 02:00 AM   Comments [0]

Math (PS) Kate and David each have $10. Together they flip a coin 5 times. Every time the coin lands on heads, Kate gives David $1. Every time the coin lands on tails, David gives Kate $1. After the coin is flipped 5 times, what is...

Read More

GMAT Question of the Day (Jul 25): Counting and Critical Reasoning

By - Jul 25, 02:00 AM   Comments [0]

Math (PS) The choir consists of 5 boys and 6 girls. In how many ways can the singers be arranged in a row, so that all the boys are together? Do not differentiate between arrangements that are obtained by swapping two boys or two girls. (A) 120 (B)...

Read More

GMAT Question of the Day (Jul 20): Mixture Problem and Critical Reasoning

By - Jul 20, 02:00 AM   Comments [0]

Math (PS) There are two bars of gold-silver alloy; one piece has 2 parts of gold to 3 parts of silver, and the other has 3 parts of gold to 7 parts of silver. If both bars are melted into a 8-kg bar with the final...

Read More

GMAT Question of the Day (Jul 18): Counting and Sentence Correction

By - Jul 18, 02:00 AM   Comments [0]

Math (PS) If one of two parallel lines has 7 points on it and the other has 8, how many triangles can be drawn using the points? (A) 168 (B) 196 (C) 316 (D) 364 (E) 455 GMAT Daily Deals Save $100, plus get a $275 bonus offer from GMAT Club when you...

Read More

Quick Mental Math: Averages

By - Jul 15, 07:15 AM   Comments [0]

This post was written by Rich Zwelling. For more GMAT prep tips, check out the Knewton GMAT blog. I run the risk of sounding like a hypocrite here. I'm often fond of telling my students that the GMAT is a reasoning test, not a...

Read More

GMAT Question of the Day (Jul 14): Word Problem and Critical Reasoning

By - Jul 14, 02:00 AM   Comments [0]

Math (PS) A number of light bulbs were purchased to illuminate a gym. However, only of them were needed. The extra 160 light bulbs were returned. 60% percent of their cost, or $96, was reimbursed. How much money was spent on illuminating the gym? (A) 360 (B)...

Read More

GMAT Question of the Day (Jul 13): Arithmetic and Critical Reasoning

By - Jul 13, 02:00 AM   Comments [0]

Math (PS) How many distinct integers are factors of 90? (A) 6 (B) 8 (C) 9 (D) 10 (E) 12 GMAT Daily Deals Experience the Manhattan GMAT difference at one of the free trial classes. Attend the first session to get discounts. Learn more! 5 days only: Get 10-20% off of Precision Essay Services...

Read More

How to Approach Rate Problems on GMAT Quant, Part II

By - Jul 9, 08:22 AM   Comments [2]

Last week, I focused on rate problems involving speed (if you're looking to the answer to last week's challenge question, scroll down to the end of this post!). This week, I'm going to shift to work-rate problems, which some students find even more challenging. You...

Read More

GMAT Question of the Day (Jul 7): Overlapping Sets and Critical Reasoning

By - Jul 7, 02:00 AM   Comments [0]

Math (PS) At Daifu university, 40% of all students are both members of a student organization and want to reduce their tuition costs. 20% of those students who want to reduce tuition are not members of the student organization. What percentage of all Daifu students want...

Read More