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Lina20 [59]
2 years ago
15

Stefanie is painting her bedroom. She can paint

Mathematics
2 answers:
quester [9]2 years ago
8 0
2/5= 12/1/3 feet
1 hour = 30/5/6 feet
mina [271]2 years ago
7 0

Answer:

30 5/6 square feet

Step-by-step explanation:

We can calculate it with a direct rule of 3. If in 2/5 hour she can paint 12 1/3 square feet, how many square feet will she paint in one hour?

Let's notice that 12 1/3 = 37/3.

\text{2/5 hour} -\!\!\!-\!\!\!- \text{37/3 square feet}\\ \text{1 hour} -\!\!\!-\!\!\!- \text{x square feet}

We use the formula of the direct rule of 3:

x = \frac {1*\frac{37}{3} } {\frac{2}{5} } \\ \\ x = \frac {\frac{37}{3} } {\frac{2}{5} } \\ \\ x = \frac{37}{3} * \frac{5}{2}= \frac{185}{6}

x = 185/6 = 30 5/6 square feet

She can paint 30 5/6 square feet in one hour.

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