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Mathematics
Ratio & Proportion
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NTPC Graduate Tier 1 2025 Shift-2 📅 06 Jun, 2025

The ratio of the market prices of gram and pea is 2:5, and the ratio of the quantities consumed by a family is 4:3. Find the ratio of the expenditure on gram to pea.

A
9:16
B
3:4
C
8:15
D
17:10
Result Summary
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NTPC Graduate Tier 1
2025 • 06 Jun, 2025 • Shift-2
The ratio of the market prices of gram and pea is 2:5, and the ratio of the quantities consumed by a family is 4:3. Find the ratio of the expenditure on gram to pea.
Correct Answer
8:15
Basic Economic Formula: Total expenditure on a commodity is calculated by multiplying its market price by the quantity consumed (Expenditure = Price × Quantity......
Ref/Book : NTPC Graduate Tier 1 2025
Ref. Subject Mathematics
Chapter -
Ref. Topic Ratio & Proportion
Pg. No -
💡 Analysis & Explanation
Basic Economic Formula ▼
Total expenditure on a commodity is calculated by multiplying its market price by the quantity consumed (Expenditure = Price × Quantity).
Applying Ratios ▼
Let the prices of gram and pea be 2x and 5x. Let the quantities consumed be 4y and 3y.
Calculating Expenditures ▼
Expenditure on gram = 2x × 4y = 8xy. Expenditure on pea = 5x × 3y = 15xy.
Final Ratio ▼
The required ratio of expenditure is 8xy : 15xy, which simplifies to 8:15.
Conclusion ▼
The ratio is exactly 8:15.
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