All Exams Test series for 1 year @ ₹349 only
Question

Express $-\frac{40}{56}$ as a rational number whose numerator is $-5$.

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
$-\frac{5}{7}$

To express the fraction \(-\frac{40}{56}\) as a rational number with a numerator of \(-5\), follow these steps:

Start with the given fraction:

\(-\frac{40}{56}\)

Simplify the fraction by finding the greatest common divisor (GCD) of 40 and 56. The GCD of 40 and 56 is 8.

Divide both the numerator and the denominator by their GCD:

\(\frac{-40 \div 8}{56 \div 8} = \frac{-5}{7}\)

The simplified form of the fraction is \(-\frac{5}{7}\), which matches the requirement of having the numerator as \(-5\).

Thus, the answer is \(-\frac{5}{7}\), confirming that \(-\frac{5}{7}\) is equivalent to the given fraction \(-\frac{40}{56}\) when simplified.

By analyzing all the options, we can conclude that the correct option is \(-\frac{5}{7}\).

Was this answer helpful?

Similar Questions

  1. $(\sqrt{5} + \sqrt{7})^2$ is a:
  2. An irrational number between 3 and 5 is:
  3. Which of the following rational number lies between $\frac{1}{4}$ and $\frac{1}{2}$.
  4. Which of the following rational number lies between 9.2 and 10.5?
  5. The arrangement of rational numbers $-\frac{7}{10}, \frac{5}{-8}, \frac{2}{-3}$ in ascending order is:

Important Questions from Rational or Irrational Numbers

  1. If \(\sqrt{1+\frac{\sqrt{3}}{2}}- \sqrt{1-\frac{\sqrt{3}}{2}}= c\) , then the value of c is:

  2. If \(\frac{\sqrt{38-5\sqrt{3} } }{\sqrt{26+7\sqrt{3} } }= \frac{a+b\sqrt{3} }{23} \) , b > 0, then the value of (b – a) is:

  3. If \( \frac{5}{4{\sqrt 2 }} + \frac{{3 + 2\sqrt 2 }}{{3 - 2\sqrt 2 }} - \frac{{3 - 2\sqrt 2 }}{{3 + 2\sqrt 2 }} = a + b\sqrt 2 \) , then what is the value of (3a + 4b)?

  4. If \(\frac {8 + 2\sqrt 3}{3\sqrt 3 + 5} = a\sqrt 3 - b,\)  then the value of a + b is equal to:

  5. If \(\frac{\sqrt{26-7\sqrt{3} } }{\sqrt{14+5\sqrt{3} } } = \frac{b+a\sqrt{3} }{11}\) , b > 0, then what is the value of  \(\sqrt{(b-a)} \)  ?

Need Expert Advice?
Upcoming Exams
RRB ALP
July 28, 2026
RRB Group D
August 03, 2026
Test Series
RRB NTPC img
Railways
RRB NTPC Under Graduate 2026 New Mock Test Series
1459 Tests 2 Tests Free
215 Attempts
4.3(512)
English, Hindi, Telugu +7 More

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App