01 / 20

Identifying
Relevant Information

Learn to separate the essential data from distracting details in word problems, so every calculation counts.

SSAT Upper Level: Quantitative

Why Relevant Information Matters

SSAT word problems are designed to test more than arithmetic: they test whether you can read critically. Most problems include numbers or details that look important but have nothing to do with the answer.

Three Types of Data in Word Problems

Essential Data
Numbers and facts you must use to solve the problem. Without them, no solution is possible.
Context Data
Background details that set the scene (names, places, objects) but don't enter any calculation.
Distractor Data
Extra numbers deliberately placed to mislead you into an incorrect operation or answer.

The Information Filter

Word Problem FILTER "What is the question asking?" Context Data Names, places, items Set the scene only Essential Data Numbers + relationships needed for the answer Distractor Data Extra numbers that tempt wrong answers

The Relevance Rule

Think of it as the "delete test": mentally cross out each fact one at a time. If crossing it out means you can no longer reach the answer, that fact is essential. If the answer stays the same, it was a distractor.

The Delete Test in Action

"Sam has 12 red marbles and 8 blue marbles. His friend gave him 5 green marbles. How many marbles does Sam have in total?" 12 red marbles ✓ Essential 8 blue marbles ✓ Essential 5 green marbles ✓ Essential
\(12 + 8 + 5 = 25\)
 Colors (red, blue, green) = context only, not used in calculation

All three quantities are essential: remove any one of them and you can't find the total. But the colors are pure context: the problem asks for total marbles, not marbles by color.

Relevant vs. Irrelevant: Key Differences

Relevant Information Irrelevant Information
Definition Needed to compute or determine the answer Not needed: removing it changes nothing
Typical form Numbers tied to the question's variable Extra numbers, names, descriptions
Delete test Problem becomes unsolvable Problem remains fully solvable
Example "drove 120 miles in 2 hours" "in a blue car"

The 4-Step Approach

1
Read the question first. Before reading the problem, look at what is actually being asked. This anchors your filter.
2
Underline every number and relationship. Go through the problem sentence by sentence. Mark each numerical value and key phrase.
3
Apply the delete test. For each underlined item, ask: "If I remove this, can I still answer the question?" If yes, cross it out.
4
Set up and solve. Use only the surviving information to build your equation or reasoning.

Example 1: Sorting the Data

✓ Essential
Apple juice = \(\$2.50\)/bottle
Maria buys \(4\) bottles
 ✕ Distractors
Grape juice = \(\$3.00\)
Orange juice = \(\$2.75\)
\(4 \times \$2.50 = \$10.00\)

Maria only buys apple juice. The prices of grape and orange juice are distractors: they tempt you to add or average all three prices.

Example 2: Speed and Distance

1
Question asks: arrival time at Station B.
2
Essential: departure = 9:00 AM, speed = \(60 \text{ mph}\), distance = \(180 \text{ miles}\).
3
Distractors: 12 cars and 480 people are irrelevant to \( \text{time} = \frac{\text{distance}}{\text{speed}} \).
4
Solve: \(180 \div 60 = 3\) hours → arrives at 12:00 PM.

Example 3: Multi-Step Problem

\(450\) students
 Total
\(\times \frac{2}{5}\)
\(180\) athletes
 Play a sport
\(\times \frac{1}{3}\)
\(60\) basketball
 Answer ✕ Distractors (not used) "Built in 1985" and "20,000 books" : irrelevant to student count

The library's year and book count look like data but have zero connection to the student-sport-basketball chain of fractions.

Watch Out: Hidden Relevance

Sometimes a piece of data looks like a distractor but is actually essential. The key is whether the question implicitly requires it.

Common SSAT Distractor Patterns

Extra Numbers
Additional quantities (counts, ages, prices) unrelated to the variable you're solving for.
Unit Confusion
Data in different units (e.g., feet vs. inches) where only one unit matters for the question.
Narrative Details
Character names, dates, locations, or backstory that set the scene but don't affect the math.
Partial Results
Intermediate values that appear in answer choices but aren't the final answer the question asks for.

Common Mistakes to Avoid

✕ Using Every Number
Students feel they must use all given numbers. Extra numbers are placed intentionally to test your filtering skill.
✕ Skipping the Question
Reading the problem top-to-bottom without reading the question first. You have no filter without knowing what's asked.
✕ Selecting Partial Answers
Stopping at an intermediate result that appears as a choice. Always re-read the question before choosing.

Quick Reference Summary

Step Action Why It Helps
1 Read the question first Sets your mental filter
2 Underline numbers and facts Prevents overlooking data
3 Apply the delete test Separates essential from distractor
4 Solve with essentials only Avoids wrong operations

Question 1 of 5

A baker makes 36 cupcakes. Each cupcake uses 2 eggs. The bakery has 5 employees and opens at 6:00 AM. How many eggs does the baker need for the cupcakes?

Question 2 of 5

Which of the following is irrelevant to solving this problem: "A rectangular garden is 12 feet long and 8 feet wide. It was planted 3 years ago and contains 6 types of flowers. What is the garden's area?"

Question 3 of 5

A movie theater has 240 seats. Tickets cost \(\$9\) for adults and \(\$6\) for children. If 150 adults and 90 children attend a showing, what is the total ticket revenue?

Question 4 of 5

Lena runs 3 miles every morning at 6 mph. She weighs 120 pounds and has been running for 2 years. How many minutes does her morning run take?

Question 5 of 5

A class of 30 students is split into groups of 5. Each group needs 4 poster boards. The teacher also buys 10 markers and 3 rolls of tape. How many poster boards are needed in total?