A store has a sale on 5 items priced $10, $20, $30, $40, $50. A customer buys exactly 3 items. The total must be at least $60 but not more than $90. How many valid combinations exist?

A 4

B 5

C 6

D 7

✓ Correct Answer: Option C

All C(5,3)=10 combos. List sums: {10,20,30}=60 ✓, {10,20,40}=70 ✓, {10,20,50}=80 ✓, {10,30,40}=80 ✓, {10,30,50}=90 ✓, {10,40,50}=100 ✗, {20,30,40}=90 ✓, {20,30,50}=100 ✗, {20,40,50}=110 ✗, {30,40,50}=120 ✗. Valid: 6.

💡 Why is C) the correct answer?

The correct answer to the question "A store has a sale on 5 items priced $10, $20, $30, $40, $50. A customer buys exactly 3 items. The total must be at least $60 but not more than $90. How many valid combinations exist?" is Option C: 6.

The other options — A) 4, B) 5, D) 7 — are incorrect for this LSAT Exam Prep question. As explained above: All C(5,3)=10 combos. List sums: {10,20,30}=60 ✓, {10,20,40}=70 ✓, {10,20,50}=80 ✓, {10,30,40}=80 ✓, {10,30,50}=90 ✓, {10,40,50}=100 ✗, {20,30,40}=90 ✓, {20,30,50}=100 ✗, {20,40,50}=110 ✗, {30,40,50}…

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This 2-level LSAT Exam Prep question from the Analytical Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free LSAT Exam Prep practice test or use flashcards for spaced repetition review.

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A store has a sale on 5 items priced $10, $20, $30, $40, $50. A customer buys exactly 3 items. The total must be at least $60 but not more than $90. How many valid combinations exist?

✓ Correct Answer: Option C

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