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Sum of three fractions is 2 11/24. If the greatest fraction is divided by the smallest fraction, the result is 7/6, which is greater than the middle fraction by 1/3. find all the three fractions ?​

User Eugenia
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1 Answer

4 votes

The three fractions are:


\[ A = (35)/(6) \]


\[ B = (5)/(6) \]


\[ C = (66)/(13) \]

Let's denote the three fractions as A, B, and C, with A being the greatest, B being the middle, and C being the smallest fraction.

Given that the sum of the three fractions is
\(2 (11)/(24)\), we can set up the equation:


\[A + B + C = 2 (11)/(24)\]

Now, we are told that if the greatest fraction (A) is divided by the smallest fraction (C), the result is
\( (7)/(6) \), and this result is greater than the middle fraction (B) by
\( (1)/(3) \). This can be expressed as two equations:


\[ (A)/(C) = (7)/(6) \]


\[ (A)/(C) - B = (1)/(3) \]

Now, let's solve these equations simultaneously.

Equation 1:


\[ A + B + C = 2 (11)/(24) \]

Equation 2:


\[ (A)/(C) = (7)/(6) \]

Equation 3:


\[ (A)/(C) - B = (1)/(3) \]

First, let's deal with Equation 2:


\[ (A)/(C) = (7)/(6) \]

Cross-multiply to get:


\[ 6A = 7C \]

Now, substitute this into Equation 1:


\[ 6A + 6B + 6C = 2 \cdot 35 + 11 \]

Simplify:


\[ 6A + 6B + 6C = 71 \]

Now, substitute
\(6A = 7C\) into the equation:


\[ 7C + 6B + 6C = 71 \]

Combine like terms:


\[ 13C + 6B = 71 \]

Now, consider Equation 3:


\[ (A)/(C) - B = (1)/(3) \]

Substitute
\( (A)/(C) = (7)/(6) \) into this equation:


\[ (7)/(6) - B = (1)/(3) \]

Multiply through by 6 to get rid of the fraction:


\[ 7 - 6B = 2 \]

Now, solve for B:


\[ -6B = -5 \]


\[ B = (5)/(6) \]

Now that we have B, substitute it back into the equation we derived earlier:


\[ 13C + 6B = 71 \]


\[ 13C + 6 \cdot (5)/(6) = 71 \]


\[ 13C + 5 = 71 \]


\[ 13C = 66 \]


\[ C = (66)/(13) = 5 (1)/(13) \]

Now that we have B and C, we can find A using the relationship
\(6A = 7C\):


\[ 6A = 7 \cdot (66)/(13) \]


\[ 6A = 7 \cdot 5 \]


\[ 6A = 35 \]


\[ A = (35)/(6) \]

So, the three fractions are:


\[ A = (35)/(6) \]


\[ B = (5)/(6) \]


\[ C = (66)/(13) \]

User Angad Singh
by
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