RRB Junior Engineer / DMS / CMA 2015 · Question 9 of 480

To gain 25% after allowing a discount of 10%, the shopkeeper should mark the price of the article which costs him₹720 as

Mathematics - Discount

Aa. 1020
Bb. 1200
Cc. 1100
Dd. 1000Correct

Answer: D. d. 1000

Explanation

Let mark price is ? x SP-MP^CO- discount % 100 100-10 _ 9x 100 10 Here, CP = ₹ 720, gain = 25% gp _ pp y 1 bO + gain ^ 100 9x ___ 100+25 => — = 720 x- 10 100 = x x X = 720 x 125 x 10 ₹1000 9x100

Source: Arihant RRB JE Solved Paper 26-Aug-2015 (3rd Shift), Q91–150 — published solved-paper compilation (Q1–90 technical not included in this source) · memory-based

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