SSC CHSL 6 Aug 2021 Shift 1 Paper

Section: Quantitative Aptitude

Question : 67 of 100

Marks: +1, -0

Joseph bought two woollen jackets for

₹ 2100

and

₹ 3150

, respectively. By selling the first at a gain of

k \%

and the second at a loss of

k \%

, he found that the selling price of both is the same. What is the value of

k

Solution:

According to the question,

\;{2100 ×(100+k)}/{100}=\;{3150 ×(100-k)}/{100}

\{ ∵ {SP}= {CP}[\;{100 ± \;\text " Profit "\; \/ {Loss} \%}/{100}]\}

⇒ 2100 × 100+2100 k

=3150 × 100-3150 k

5250 k=315000-210000=105000

k=\;{105000}/{5250}=20 \%

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