Two numbers are respectively 20% and 50% of a third number. What per cent is the first number of second?
- 10%
- 20%
- 30%
- 40%
- 50%
Explanation
Let third number is x. Then first no.20%ofx=20x100 Second number=50%ofx=50x100 Percent of first no of second no,=20x10050x100×100=2×10020= 40%
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