Q$20.$ Imagine you are the manager at PQR$,$ and you are comparing credit terms offered by two suppliers for raw materials.

Supplier $1$: Offers credit terms of $\frac{3}{10}$ net $60.$

Supplier $2$: Offers credit terms of $\frac{3}{15}$ net $60.$

Calculate the cost of trade credit during the non$-$discount period for both suppliers. Based on the cost analysis, suggest which supplier PQR should choose?