DILR Speed: Cut Your Set Time From 18 to 12 Minutes

There is a myth that DILR percentile is about whether you can solve the set. Past a point, it is about your raw speed on the ones you already can solve. Most aspirants who plateau in the high 80s are not failing on logic. They crack the set, get the answers right, and still walk out having attempted only three of four sets because each one ate 17 or 18 minutes. The gap between a 90 and a 98 in DILR is rarely a smarter mind. It is the same mind, with four or five minutes of waste removed from every set. That waste is the topic of this guide, and most of it is invisible until you go looking for it.

Where the minutes actually go

Time the next set you solve. Not the total, the parts. How long until you finished reading. How long until your grid was drawn. How long on the first question versus the fourth. Most people are shocked by the answer. The reasoning, the part that feels like the hard work, is often only half the clock. The rest is paperwork, repetition, and a refusal to move on. A set that takes 18 minutes usually contains about 11 minutes of real thinking and 7 minutes of habits that add nothing.

This matters because DILR speed is not a talent you are born without. It is a set of habits, and habits can be named and replaced one at a time. You do not need to think faster. You need to stop doing the five things below, which cost time without buying a single mark. Knowing how to solve DILR faster starts with seeing exactly where the slow comes from, so the fixes have somewhere to land.

Before the fixes, one rule. None of this means rushing the setup. The careful reading and the first round of deductions are where accuracy lives, so leave them alone. Everything we cut sits around that core, not inside it. If you would like to first judge which sets are even worth your 12 minutes, the companion piece on rating a set in 60 seconds pairs naturally with this one.

The 5 speed killers and their fixes

Each of these is a habit, not a flaw in your reasoning. You can drop them in a single practice session and feel the clock change immediately.

The minimum-footprint note system

The five killers share a root. Most of them come from putting too much on paper. So the speed fix is partly a note-taking fix. A minimum-footprint sheet uses about half the paper of a typical aspirant's setup, and that reduction is not cosmetic. Less writing means less time writing, a cleaner page to read deductions from, and fewer transcription errors that send you down a wrong branch.

The first few sets on this system feel uncomfortable, because your hand wants to write more. Push through three or four sets and it settles. You will notice the page stays readable to the end, which is what lets you pick off the easy questions instead of hunting through a wall of recopied text.

The timed re-solve drill

You cannot train speed on fresh sets, because a fresh set mixes two variables, difficulty and speed, and you cannot tell which one moved. So strip out difficulty. Take sets you have already solved correctly and solve them again, against a clock. You know they are crackable, so the only thing left to measure is how fast your mechanics run. This is the cleanest speed drill in DILR, and almost nobody does it.

Run this drill once a week. The numbers tell a clear story. A set you originally cracked in 16 minutes should re-solve in 10 or 11 once the waste is gone, and that delta is exactly the time you are leaving on the table in a live exam. To build a steady supply of solved sets for the drill, the Optima Learn practice question bank lets you filter DILR sets by type so you can re-solve a consistent mix rather than whatever comes to hand.

What 12 minutes a set buys you

Run the arithmetic on the section. At 18 minutes a set, four sets need 72 minutes, and you only have 40. So you attempt two, maybe touch a third, and your fate rests on those two going perfectly. At 12 minutes a set, three full sets fit in 36 minutes, leaving four minutes to read the fourth and lift its one or two easy questions. That is the difference between a two-set gamble and a three-set base, and it is built entirely from waste you removed, not difficulty you conquered.

Speed also changes which sets you can afford to attempt. When each set is cheaper in time, a borderline set becomes worth a look, because a wrong call costs you 12 minutes instead of 18. Your selection gets braver and your coverage widens. For the wider picture of how the DILR section is built and weighted in the CAT exam, the section overview gives you the structure your timing plan has to fit inside.

Common doubts about DILR speed

What is a good time per set in CAT DILR?

For a set you can fully crack, 12 to 14 minutes is healthy, and your strongest sets should land closer to 12. With four sets and about 40 minutes, two sets at 18 each is not survivable. The goal is not to force every set to 10 minutes. It is to stop bleeding four to six extra minutes on sets you would have solved anyway, so you have time to read a fourth set and collect its easy questions.

How do I solve DILR faster without making more mistakes?

Faster and accurate are not opposites once you cut the right things. The lost minutes are usually spent recopying constraints, redrawing the same grid, and verifying answers you were already sure of. Cutting those does not touch your reasoning, so accuracy holds. What does hurt accuracy is skipping the deductions and lunging at questions before the structure is clear. Keep the setup careful and trim the paperwork around it.

Should I write down every constraint in a DILR set?

No. Copying each constraint in full is one of the biggest silent drains in DILR. Annotate instead. Number the rules in the question, mark short symbols against the relevant cells, and keep the paragraph as your reference. A minimum-footprint sheet, one grid plus a few symbols, is usually all a set needs, and it leaves your eyes free to reason instead of transcribe.

How do I practise DILR speed specifically?

Re-solve sets you have already solved, against a clock. Take 10 sets you cracked correctly in past weeks and solve them again with a timer. Since you know they are solvable, the only variable left is time, so the drill isolates speed cleanly. Log your time per set, watch where it drops, and note which habit you broke to get there.

Pick one killer, fix it this week, and run the re-solve drill on Sunday. That single loop, repeated, is what turns an 18-minute set into a 12-minute one without any change to how hard you think. When you want the rest of the section playbook, browse the full library of CAT preparation guides covering set selection, partial solving, verification, and the timing decisions that decide your DILR percentile.