Rohit multiplies a number by 2 instead of dividing the number by 2. Resultant…
2022
Rohit multiplies a number by 2 instead of dividing the number by 2. Resultant number is what percentage of the correct value?
Answer: D. 400% — Solution: Use a variable and compare the two results. Let the original number be x. Correct operation: dividing by 2 gives x/2. Rohit's operation: multiplying…
- A.
200%
- B.
300%
- C.
50%
- D.
400%
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Show answer & explanation
Correct answer: D
Solution: Use a variable and compare the two results.
Let the original number be x.
Correct operation: dividing by 2 gives x/2.
Rohit's operation: multiplying by 2 gives 2x.
Compare Rohit's result with the correct result:
Compute the ratio: (2x) ÷ (x/2) = (2x) × (2/x) = 4.
Convert to percentage: 4 = 400%.
Therefore, the resultant number is 400% of the correct value.
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