Bucket

Kim and Joey share a 30-ounce bucket of clay. By the end of the week, Kim has used 3/10 of the bucket. Joey has used 3/5 of the bucket of clay. How many ounces are left in the bucket?

Correct answer:

x =  3 oz

Step-by-step explanation:

$$\begin{gathered} f=\frac{3}{10}+\frac{3}{5}=\frac{3}{10}+\frac{6}{10}=\frac{3+6}{10}=\frac{9}{10}=0.9 \\ m=30\text{oz} \\ u=m\cdot f=30\cdot \frac{9}{10}=\frac{30\cdot 9}{10}=\frac{270}{10}=27\text{oz} \\ x=m-u=30-27=3\text{oz} \end{gathered}$$

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