RRB Junior Engineer / DMS / CMA 2015 · Question 10 of 480

A shopkeeper mixes 26kg of rice which costs him ₹ 100 per kg with 30kg of rice which costs him ₹ 180 per kg. He sells the mixed rice at₹ 150 per kg. The percentage gain is

Mathematics - Mixtures and Alligations

Aa. 10%
Bb. —% 21
Cc. 7%
Dd. 5%Correct

Answer: D. d. 5%

Explanation

Total CP = 26 x 100 + 30 x 180 = 2600 + 5400 = ₹ 8000 SP = (26 + 30) x 150 = ₹ 8400 .-.Gain Percentage _ SP-^CP xioo CP 8400-8000 xlOO xlOO = 5% 8000 400 8000

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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