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Mathematics
Profit and Loss
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NTPC Graduate Tier 1 2025 Shift-1 📅 06 May, 2025

A single equivalent discount for successive discounts of 20% and 15% on a marked price is:

A
32%
B
35%
C
30%
D
38%
Result Summary
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APEDIA

NTPC Graduate Tier 1
2025 • 06 May, 2025 • Shift-1
A single equivalent discount for successive discounts of 20% and 15% on a marked price is:
Correct Answer
32%
Setting a Baseline: To visualize the mathematical progression clearly, assume the initial Marked Price (MP) of the theoretical item is exactly 100 units.First D......
Ref/Book : NTPC Graduate Tier 1 2025
Ref. Subject Mathematics
Chapter -
Ref. Topic Profit and Loss
Pg. No -
💡 Analysis & Explanation
Setting a Baseline ▼
To visualize the mathematical progression clearly, assume the initial Marked Price (MP) of the theoretical item is exactly 100 units.
First Discount Phase ▼
Applying the initial 20% reduction removes 20 units, bringing the intermediate selling price down to exactly 80 units.
Second Discount Phase ▼
The subsequent 15% discount is applied purely to this new balance of 80, not the original 100. 15% of 80 is rigorously calculated as 12 units. Subtracting this leaves a final selling price of 68 units.
Net Calculation ▼
The total absolute drop from the starting 100 baseline down to the final 68 is exactly 32 units.
Conclusion ▼
Thus, mathematically, the single equivalent continuous discount is strictly 32%.
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