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  1. A shopkeeper allows 10% discount on goods when he sells without credit. Cost price of his goods is 80% of his selling price. If he sells his goods by cash, then his profit is
    1. 50%
    2. 70%
    3. 25%
    4. 40%
Correct Option: C

Let Marked price of article= Rs. p

∴ S.P. of article =
90p
100

= Rs.
9p
10

∴  C.P. =
80p × 9p
=
36p
100 × 1050

∴  Gain =
9p
36p
1050

Gain =
45p − 36p
= Rs.
9p
5050

∴  Gain %=
9p/50
× 100 = 25 %
36p/50


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