Aaron

Aaron filled the bird bath with 72 ounces of water. A group of bluejays came by and drank 6.19 ounces. Then, a vulture swooped in and drank twelve and three-fifths ounces of the water. How much water is left in the bird bath?

Correct answer:

x =  53 ²¹⁄₁₀₀ = 5321/100 oz

Step-by-step explanation:

$$\begin{gathered} a=72\text{oz} \\ j=6.19\text{oz} \\ s=12\frac{3}{5}=12+\frac{3}{5}=\frac{12\cdot 5+3}{5}=\frac{60+3}{5}=\frac{63}{5}=12.6\text{oz} \\ b=j+s=6.19+12.6=\frac{1879}{100}=18.79\text{oz} \\ x=a-b=72-\frac{1879}{100}=\frac{72\cdot 100}{100}-\frac{1879}{100}=\frac{7200}{100}-\frac{1879}{100}=\frac{7200-1879}{100}=\frac{5321}{100}=\frac{5321}{100}\text{oz}=53\frac{21}{100}\text{oz}=53.21\text{oz} \end{gathered}$$

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