SAT Math

Category - Algebra and Functions

Twelve bottles contain 16 liters of water. All bottles are identical. How many bottles will it take to contain 24 liters of water?
  1. 14
  2. 15
  3. 16
  4. 17
  5. 18
Explanation
Answer: E - Sixteen bottles will contain 24 liters of water. The volume of water and number of bottles vary directly.

12:x = 16:24
16x = 12 × 24
x = (12 × 24)/16 = 18
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