A factory manufactures solid wooden storage blocks, each featuring a rectangular base measuring 10 cm × 8 cm and a vertical height of 15 cm. If each unit volume (cm³) of the block is sold for ₹0.75 and costs ₹0.45 to produce, calculate the total net profit made from selling 12 such blocks.

The correct option is ₹4320.

Step 1: Find the volume of a single storage block
Each wooden block is a rectangular solid (cuboid) with base dimensions 10 cm × 8 cm and height 15 cm.
The volume of one block is calculated using the formula:

$\text{Volume of 1 block}=\text{Length}\times \text{Width}\times \text{Height}$

$\text{Volume of 1 block}=10\text{cm}\times 8\text{cm}\times 15\text{cm}=1200{\text{cm}}^3$

Step 2: Calculate the net profit per unit volume (cm³)
The selling price per unit volume is ₹0.75 and the cost price per unit volume is ₹0.45.
The net profit made on each cm³ of wood is:

$\text{Profit per cm}{}^3=\text{Selling Price per cm}{}^3-\text{Cost Price per cm}{}^3$

$\text{Profit per cm}{}^3=\text{₹}0.75-\text{₹}0.45=\text{₹}0.30$

Step 3: Calculate the net profit for one block
Multiplying the volume of a single block by the net profit per cm³ gives:

$\text{Profit for 1 block}=1200{\text{cm}}^3\times \text{₹}0.30=\text{₹}360$

Step 4: Calculate the total net profit for 12 blocks
To find the profit for selling 12 such blocks:

$\text{Total net profit}=12\times \text{Profit for 1 block}$

$\text{Total net profit}=12\times \text{₹}360=\text{₹}4320$

Hence, the total net profit made from selling 12 such storage blocks is ₹4320.