Price–weight proportion with grams and paise: If a quarter kilogram (250 g) of potatoes costs 60 paise at a constant rate, how many paise will 200 g of potatoes cost at the same price per gram?

Introduction / Context:
Here we apply a direct proportion between weight and price. With uniform pricing per gram, costs scale linearly. Care must be taken to convert quarter kilogram to grams to keep units consistent throughout the calculation.

Given Data / Assumptions:

• 250 g costs 60 paise
• Find cost of 200 g
• Price per gram is constant (no bulk discounts or tiers).

Concept / Approach:
Compute the unit price in paise per gram, then multiply by the required grams. Alternatively, use a ratio to scale directly from 250 g to 200 g without explicitly computing unit price.

Step-by-Step Solution:
Unit price = 60 / 250 = 0.24 paise per gramCost for 200 g = 0.24 * 200 = 48 paise

Verification / Alternative check:
Proportion method: 200/250 = 0.8; 0.8 * 60 = 48 paise. Same result, faster if comfortable with ratios.

Why Other Options Are Wrong:
45 and 52 arise from incorrect proportional scaling; 59 and 72 imply higher costs inconsistent with a lower weight or mix units incorrectly.

Common Pitfalls:
Confusing paise and rupees; ensure all values are in paise when computing. Also, confirm that 250 g is used for quarter kilogram, not 200 g.

Final Answer:
48