20 models of sports cars

Hi Sri,

To answer this question, we need data from 2 columns: "Horse Power" and "Engine Size"

We're asked if the least expensive model (The Tesco) has the lowest ratio of horsepower/engine size.

The Tesco's ratio is 310/5.7

For a ratio to be lower than this, we would need EITHER a smaller numerator OR a bigger denominator (or both).

I'd start by looking at cars with a lower horsepower. There aren't many, but they all have a significantly lower Engine Size (relative to the Tesco), so their ratios are NOT smaller.

Next, I'd look at cars with a bigger Engine Size. There aren't too many here either, but they all have a significantly higher Engine Size (relative to the Tesco), so their ratios are NOT smaller.

The model that seems closest is the PTZ at 400/6.2

The Tesco: 310/5.7 = about 54:1 while the PTZ: 400/6.2 = about 66:1

The Tesco DOES have the lowest ratio.

Final Answer: Yes

GMAT assassins aren't born, they're made,
Rich

Hi WesternOverseas,

I'm glad you found my explanation to be helpful. Most IR questions are more about staying organized than doing lots of math. When dealing with these types of data-heavy prompts, it's important to understand the general layout and content of any tables you're given, take notes on what you'll need to answer a given question, then pull the data from the table. Sometimes you'll be asked to do a little math, but more often than not, you'll be asked to deal with a pattern of some kind. Either way, the task usually won't take too much "work" on your part.

GMAT assassins aren't born, they're made,
Rich