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NTPC Graduate Tier 1 2016 Shift 2 📅 02 Apr, 2016

A table was sold at a profit of 10%. If its cost price was 5% less and it was sold for Rs. 7 more, the gain would have been 20%. Find the cost price of the table.

A
Rs. 175
B
Rs. 200
C
Rs. 250
D
Rs. 150
Result Summary
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APEDIA

NTPC Graduate Tier 1
2016 • 02 Apr, 2016 • Shift 2
A table was sold at a profit of 10%. If its cost price was 5% less and it was sold for Rs. 7 more, the gain would have been 20%. Find the cost price of the table.
Correct Answer
Rs. 175
Variable Initialization: Let the original Cost Price (CP) of the table be 'x'. Initial Selling Price (SP) at 10% profit is 1.10x.Applying New Conditions: If CP ......
💡 Analysis & Explanation
Variable Initialization
Let the original Cost Price (CP) of the table be 'x'. Initial Selling Price (SP) at 10% profit is 1.10x.
Applying New Conditions
If CP is 5% less, the new CP is 0.95x. If sold for Rs. 7 more, the new SP is 1.10x + 7.
Formulating Profit Equation
The new profit is given as 20% on the new CP. So, New SP = 1.20 * New CP.
Substitution and Execution
1.10x + 7 = 1.20 * (0.95x). This translates to 1.10x + 7 = 1.14x. Subtracting 1.10x from both sides leaves 0.04x = 7.
Final Calculation
x = 7 / 0.04 = 700 / 4 = 175.
Conclusion
The original cost price of the table was unequivocally Rs. 175.