NCHMCT JEE 2021 Question Paper with solutions for online practice

Question : 84 of 200

Marks: +1, -0

Successive discount of

20 \%

and

10 \%

is given on an item of

₹ 700

, find the selling price.

Solution:

Here,

r_{1}=20 \%, r_{2}=10 \%

and marked price

=₹ 700

∴ {SP} \;\text " of an item "\; \;\; =700(\;{1-20}/{100})(\;{1-10}/{100})

\;\; =700 × \;{80}/{100} × \;{90}/{100}

\;\; =7 × 8 × 9=₹ 504

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