The ratio of urea and potash in a mixed fertilizer is 7 : 3. Express the quantity of urea present as… · ABC26GN3051

Subject: General Aptitude · Chapter: Ratio and Proportion · Exam: P.C.S. 2008

The ratio of urea and potash in a mixed fertilizer is 7 : 3. Express the quantity of urea present as percentage of the total amount of fertilizer.

(a)20\%

(b)50\%

(c)60\%

(d)70\%

Answer

Answer (as printed): D

Explanation

Required percentage $$=\left(\frac{7}{7+3} \times 100\right) \%=\left(\frac{7}{10} \times 100\right) \%=70 \% .$$

Explanation as extracted from the printed page; notation may be imperfect.

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