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Engineering Exams RRB-JE JE (Junior Engineer) CMA (Chemical and Metallurgical Assistant) DMS (Depot Material Superintendent) CS (Chemical Supervisor - Research) MS (Metallurgical Supervisor - Research) Mathematics 2019 24.05.2019 Paper-1 Shift-1 Easy +1 -0.33
Pens are bought at the rate of 8 for Rs.40 and sold at 6 for Rs.40. Find the loss or gain per cent.
Correct Answer: A. Gain of 33.33%
Explanation: To find the gain or loss percentage, first determine the cost price (CP) and selling price (SP) for a single unit.1. Calculate the CP of one pen: If 8 pens cost Rs.40, then the CP per pen is 40 / 8 = Rs.5. 2. Calculate the SP of one pen: If 6 pens are sold for Rs.40, then the SP per pen is 40 / 6 = Rs.6.67. 3. Determine profit or loss: Since the SP (Rs.6.67) is higher than the CP (Rs.5), there is a gain. 4. Calculate the gain amount: Gain = SP - CP = 6.67 - 5 = Rs.1.67. 5. Calculate the gain percentage: Gain % = (Gain / CP) \* 100 = (1.67 / 5) \* 100 = 33.33%.Therefore, there is a gain of 33.33%.
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