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A \( 12 \mathrm{~g} \) package of coffee costs Dhs 2.55. Find the unit price in fils per grams. Round to the nearest hundreth of a fils.
0.21 fils/g
21.25 fils \( / \mathrm{g} \)
2.13 fils/g
4.71 fils/g

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Answer

\( \text{Unit price} = 21.25 \text{ fils/g}\)

Steps

Step 1 ：\( \text{Unit price} = \frac{\text{Total price}}{\text{Mass}} \)

Step 2 ：\( \text{Unit price} = \frac{\text{Dhs 2.55}}{12 \mathrm{~g}}\)

Step 3 ：\( \text{Unit price} = 21.25 \text{ fils/g}\)