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Question

The value of $\frac{4}{3} + \left( \frac{1}{1 + \frac{5}{6}} \right) - \frac{5}{4}$ is

This question was previously asked in
RRB NTPC 2024 CBT 1 Question Paper (28-Aug-2025) (Shift 3)
The correct answer is
$\frac{83}{132}$

To solve the expression \(\frac{4}{3} + \left( \frac{1}{1 + \frac{5}{6}} \right) - \frac{5}{4}\), we will evaluate each part step-by-step.

  1. First, simplify the inner expression \(\frac{1}{1 + \frac{5}{6}}\):
    • The expression inside the parentheses is \(1 + \frac{5}{6}\).
    • Convert \(1\) to a fraction with the same denominator as \(\frac{5}{6}\), which is \(\frac{6}{6}\).
    • Now, add the fractions: \(\frac{6}{6} + \frac{5}{6} = \frac{11}{6}\).
    • Now, we take the reciprocal of \(\frac{11}{6}\), which gives us \(\frac{6}{11}\).
  2. Substitute \(\frac{6}{11}\) back into the original expression, so it becomes \(\frac{4}{3} + \frac{6}{11} - \frac{5}{4}\).
  3. Find a common denominator to add and subtract these fractions. The denominators are \(3\), \(11\), and \(4\).
    • The least common multiple (LCM) of \(3\), \(11\), and \(4\) is \(132\).
  4. Convert each fraction to have a denominator of \(132\):
    • Convert \(\frac{4}{3}\): \(\frac{4}{3} = \frac{4 \times 44}{3 \times 44} = \frac{176}{132}\).
    • Convert \(\frac{6}{11}\): \(\frac{6}{11} = \frac{6 \times 12}{11 \times 12} = \frac{72}{132}\).
    • Convert \(\frac{5}{4}\): \(\frac{5}{4} = \frac{5 \times 33}{4 \times 33} = \frac{165}{132}\).
  5. Combine the fractions:
    • Add and subtract the numerators: \(176 + 72 - 165 = 83\).
    • Place the result over the common denominator: \(\frac{83}{132}\).

Thus, the value of the expression is \(\frac{83}{132}\), which matches the given correct option.

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Similar Questions

  1. $1.236576576...$
    can be written in the form of:
  2. What is the sum of $\frac{1}{3}$, $\frac{4}{3}$ and $\frac{3}{4}$?
  3. Four persons A, B, C and D completed a task in $\frac{2}{3} \text{ h}, \frac{3}{4} \text{ h}, \frac{4}{5} \text{ h}$ and $\frac{1}{5} \text{ h}$ respectively. Who among the following took the highest amount of time to complete the task?
  4. What is the value of 

    $\frac{7}{9} - \frac{11}{12} + \frac{13}{16} - \frac{1}{8}$?

  5. How much does one need to add to $\frac{1}{2}$ to get $2$?
  6. The sum of the numerator and denominator of a fraction is 11. If the numerator is decreased by 1, the fraction becomes $\frac{1}{4}$. Find the fraction.
  7. If the numerator of a fraction is increased by 30% and its denominator is decreased by 35%, the value of the fraction becomes $\frac{3}{15}$. Find the original fraction.
  8. Two-fifth of seven-seventeenth of three-fifth of a number is 84. Find 40% of that number.
  9. A beautician's income includes her salary and the tips she gets for her services. During a particular week, if her tips were $\frac{5}{4}$ of her salary, then what fraction of her income came from the tips?
  10. What smallest fraction should be added to $3\frac{2}{3} + 6\frac{7}{12} + 4\frac{9}{36} + 5 + 7\frac{1}{12}$ to make the sum a whole number?

Important Questions from Fractions

  1. 5 \(\frac{3}{4}\) + x + 2  \(\frac{1}{2}\) = 10  \(\frac{1}{8}\) Find the value of x.

  2. Simplify the expression 441 ÷  \(\left[270 \div \frac{3}{7}+\left(17\div \frac{1}{3}\right)-\left(8\frac{1}{2}-\frac{5}{2}\right)\right]\)

  3. Number 0.232323 can be written in rational form as:

  4. Solve: \(\frac{1}{2}\)  [{-2(2 + 3)*20}/2]

  5. Match the following.

    Column I

    Column II

    a.

    Equivalent fraction of \(\frac{7}{12}\)  is  

    i.

    Proper fraction

    b.

    Equivalent fraction of  \(\frac{9}{15}\)  is

    ii.

    Improper fraction

    c.

    \(\frac{7}{11}\)  is

    iii.

    \(\frac{21}{36}\)

    d.

    \(\frac{19}{5}\)  is

    iv.

    \(\frac{3}{5}\)

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