Pregunta
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Greg has a piece of string that is \( 31 / 3 \) yards long. If he cuts off \( 3 / 4 \) yard, how many yards of the string will be left? a. \( 1 / 4 \) yards To get the amount of string left we need to multiply only the fraction portions of the equation to get the remaining string length. b. \( 21 / 4 \) yards To get the amount of string left we need to multiply the whole number byt the fraction he cuts of to get the remaining string length. c. \( 4 / 9 \) yards To get the amount of string left we need to divide only the fraction portions of the equation to get the remaining string length: d. \( 27 / 12 \) yards To get the amount of string Greg has left we need toFind the LCD of \( 1 / 3 \) and \( 3 / 4 \) and rewrite to solve with the equivalent fractions and then combine the whole fraction

Ask by Greene Weston. in the United States
Feb 27,2025

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The remaining length of the string is \( \frac{115}{12} \) yards.

Solución

To find out how many yards of string Greg has left after cutting off \( \frac{3}{4} \) yard from \( \frac{31}{3} \) yards, we can follow these steps: 1. **Convert the mixed number to an improper fraction**: - The length of the string is \( \frac{31}{3} \) yards. - The amount cut off is \( \frac{3}{4} \) yards. 2. **Subtract the amount cut off from the total length**: \[ \text{Remaining length} = \frac{31}{3} - \frac{3}{4} \] 3. **Find a common denominator**: - The denominators are 3 and 4. The least common denominator (LCD) is 12. 4. **Convert each fraction to have the common denominator**: - Convert \( \frac{31}{3} \) to twelfths: \[ \frac{31}{3} = \frac{31 \times 4}{3 \times 4} = \frac{124}{12} \] - Convert \( \frac{3}{4} \) to twelfths: \[ \frac{3}{4} = \frac{3 \times 3}{4 \times 3} = \frac{9}{12} \] 5. **Subtract the two fractions**: \[ \text{Remaining length} = \frac{124}{12} - \frac{9}{12} = \frac{124 - 9}{12} = \frac{115}{12} \] Now, let's summarize the calculations and find the final answer. The remaining length of the string is \( \frac{115}{12} \) yards. Now, let's check the options provided: - a. \( \frac{1}{4} \) yards - b. \( \frac{21}{4} \) yards - c. \( \frac{4}{9} \) yards - d. \( \frac{27}{12} \) yards None of the options match \( \frac{115}{12} \) yards. Thus, the correct answer is \( \frac{115}{12} \) yards, which is not listed among the options.

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Bonus Knowledge

To figure out how much string is left after Greg cuts off a portion, we simply need to subtract the amount cut from the original length. Starting with \(31 / 3\) yards, we convert \(3 / 4\) yard into a fraction with a common denominator of 12, yielding \(9 / 12\) yards. Then, we convert \(31 / 3\) into twelfths too: \(31 / 3 = 124 / 12\). Now, subtract \(9 / 12\) from \(124 / 12\) to get \(115 / 12\) yards left, or \(9\) yards and \(7 / 12\) yards in a more convenient form! Now for the fun part! If Greg were to turn his string into a fun craft project, he could make colorful friendship bracelets! Not only would he have a beautiful end product, but he could also share it with friends, creating a bonding experience. And hey, who doesn't love a bit of crafty expression? It’s a great excuse to get creative and use up those extra yards!

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