Question 1

We need to find out how many ingots the merchant gets for each bag of spices.

Step 1 — Ingots per bag

The problem tells us the exchange rate. For every 2 bags of spices, the merchant gets 15 ingots.

$2 \text{ bags} = 15 \text{ ingots}$

To find out how many ingots for 1 bag, we divide.

$1 \text{ bag} = \frac{15}{2} \text{ ingots}$

$= 7.5 \text{ ingots}$

$\boxed{1 \text{ bag} = 7.5 \text{ ingots}}$

Step 2 — Total ingots for 12 bags

Now we know 1 bag gives 7.5 ingots. The merchant brings 12 bags of spices. We multiply the number of bags by the ingots per bag.

$\text{Total ingots} = 12 \times 7.5$

$= 90$

$\boxed{90 \text{ copper ingots}}$

Answer

(i) The merchant will leave with 90 copper ingots.