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A number multiplied by 3/4 of itself gives 10800. The number is:

Question: A number multiplied by 3/4 of itself gives 10800. The number is:
  • A. 100
  • B. 120 ✓
  • C. 150
  • D. 200
Correct Answer: B. 120
Explanation: Let number = x → x*(3/4)x = 10800 ⇒ (3/4)x² =10800 ⇒ x² =14400 ⇒ x = 120.

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