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प्रश्न
Two numbers are respectively 20 percent and 50 percent of a third number. What percent is the second of the first?
उत्तर
Let the third number be 100
∴ The first number = 20% of 100
= `(20)/(100) xx 100`
= 20
and the second number = 50% of 100
= `(50)/(100) xx 100`
= 50
∴ The second no. as the present of the first
= `(50)/(20)xx 100%`
= 250%
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