Two successive price increases of 10% each on an article are equivalent to a single price increase of · ABC26GN2394
Subject: General Aptitude · Chapter: Percentage · Exam: S.S.C. 2010
Two successive price increases of 10\% each on an article are equivalent to a single price increase of
(a)19\%
(b)20\%
(c)21\%
(d)22\%
Answer
Answer (as printed): C
Explanation
Let the original price be ₹ 100. New final price $=110 \%$ of (110\% of ₹ 100) $$=₹\left(\frac{110}{100} \times \frac{110}{100} \times 100\right)=₹ 121 .$$ ∴ Total increase $=(121-100) \%=21 \%$.
Explanation as extracted from the printed page; notation may be imperfect.