To maximize profit with a limited material supply of 500 kg per month, the company should prioritize producing the product that generates the highest contribution margin per kg of material used.

Step 1: Calculate Contribution Margin Per Unit for Each ProductSince fixed costs are not relevant in this decision, we focus on the contribution margin per unit of raw material:

Selling price per unit = $10

Material cost per unit = 2 kg × $1/kg = $2

Contribution margin per unit = $10 - $2 = $8

Contribution margin per kg = $8 ÷ 2 kg = $4 per kg

Selling price per unit = $13

Material cost per unit = 6 kg × $1/kg = $6

Contribution margin per unit = $13 - $6 = $7

Contribution margin per kg = $7 ÷ 6 kg = $1.17 per kg

Product X ($4 per kg) is more profitable per kg than Product Y ($1.17 per kg).

To maximize profit, produce as many units of Product X as possible first, then allocate the remaining material to Product Y.

First, maximize production of Product X

Each unit of Product X requires 2 kg.

Maximum units of Product X = 500 kg ÷ 2 kg per unit = 250 units.

However, demand is only 70 units, so produce 70 units of Product X.

Material used for 70 units of X = 70 × 2 kg = 140 kg.

Material remaining = 500 kg - 140 kg = 360 kg.

Use remaining material for Product Y

Each unit of Product Y requires 6 kg.

Maximum units of Product Y = 360 kg ÷ 6 kg per unit = 60 units.

Produce 70 units of Product X (to meet demand).

Produce 60 units of Product Y (using the remaining material).

IIA GTAG 13: Business Performance Management – Discusses maximizing profit by prioritizing high contribution margin products.

IIA Practice Guide: Cost Analysis for Decision-Making – Covers constraints and resource allocation for maximizing profitability.

Product XProduct YStep 2: Prioritize Product with Higher Contribution Margin Per KgStep 3: Allocate Limited Material (500 kg)Final Decision:IIA References for Validation:Thus, B (60 units) is the correct answer because it optimally allocates the 500 kg of material to maximize profit.