Arithmetic

There is no running away from the reality that various units of measurement are used for the same physical quantity, so you will occasionally need to convert one to the other. Let us learn how to do it quickly and […]

Replacement is a very interesting, not to mention useful, concept in GMAT. So brace yourself to learn some new things today. First of all, many ‘replacement’ questions are nothing but the plain old mixture questions, the type we discussed in […]

Let’s start today’s post with some magic tricks: Trick 1 Step 1: Pick any two consecutive integers (Don’t tell me what they are!). Step 2: Multiply them. Whatever your numbers, the product is an even number! If you are wondering […]

We have discussed weighted averages in detail but one thing we are yet to talk about is how you decide what the weights will be in weighted average problems. It is not always straight forward to identify the weights. For […]

I visit the GMAT Club forum regularly and discuss some ideas, some methodologies there. The weighted averages method I discussed is one of my most highly appreciated inputs on the forum. People love how easily they can solve some of […]

Today, let’s discuss work-rate using joint variation. Though we will use the concepts of joint variation, we will solve the questions using a simple methodology. Question 1: A contractor undertakes to do a job within 100 days and hires 10 […]

What does a 20% sale with an additional 25% off on the €85 sweater that you have your eye on mean to you? It means a big rebate. Let’s see how much: If you reduce 85 by 20%, it becomes . […]

Mark Up, Discount and Profit questions confuse a lot of people. But, actually, most of them are absolute sitters — very easy to solve — a free ride! How? We will just see. Let me begin with the previous post’s […]

Today’s question’s intent is to show you how simple your calculations can get when you use the methods we discussed in our Ratios module. I couldn’t say it enough – develop a love for ratios. You will save a huge […]

What helps in tests which need you to have speed and accuracy both is hacks – the innovative shortcuts for various questions – the way very smart people would solve the question – without putting in too much effort! Mind […]