Multiple choice general knowledge math & puzzles

Madhu is building a swimming pool. On the blueprint for the pool the scale is 3in. to every 5ft. If the length of the pool is 9in. on the blueprint how many feet is the actual length of the pool?

  1. 25 ft

  2. 15 ft

  3. 9 ft

  4. Insufficient Data
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The scale is 3 inches to 5 feet, meaning every inch on the blueprint represents 5/3 feet in reality. For 9 inches on the blueprint: 9 × (5/3) = 15 feet. Option B is correct. Option A (25 ft) incorrectly uses 9:5 as the ratio directly.

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