Question

Choose the rational numbers whose numerator is $(-5)\times 6$, and the denominator is $(34-23)\times (7-5)$.

• A. $\frac{20}{11}$
• B. $\frac{40}{22}$
• C. $\frac{-15}{11}$
• D. $\frac{-30}{22}$

Answer 1

Answer: (C), (D)

The correct options are
C

$\frac{-15}{11}$

D

$\frac{-30}{22}$

Rational numbers are the numbers which can be expressed in the form of $\frac{p}{q}$, given $q\ne 0$, p and q are integers.

$\frac{p}{q}=\frac{-5\times 6}{(34-23)\times (7-5)}$

$=\frac{-30}{11\times 2}$

$=\frac{-30}{22}$

$=\frac{-15}{11}$