Ajay buys 18 oranges for ₹90 and sells 15 oranges for ₹105. Find the percentage of his gain.

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SSC CPO 2022 Tier-I Official Paper (Held On 10 Nov 2022 Shift 2) [Answer Key]
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  1. 35%
  2. 30%
  3. 25%
  4. 40%

Answer (Detailed Solution Below)

Option 4 : 40%
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SSC CPO : General Intelligence & Reasoning Sectional Test 1
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Detailed Solution

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Given:

The cost price of 18 oranges = Rs 90

The selling price of 15 oranges = Rs 105

Formula Used:

Gain Percentage = \(\frac{Gain}{CP}\times 100\)

Calculation:

⇒ CP of 1 orange = \(\frac{90}{18}\) = Rs 5

⇒ SP of 1 orange = \(\frac{105}{15}\) = Rs 7

⇒ Gain = 7 – 5 = Rs 2

⇒ Gain Percentage = \(\frac{2}{5}\times 100\) = 2 × 20 = 40%

∴ the gain percentage is 40%.

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