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13. Find the quotient of [tex]\frac{5}{31}[/tex] divided by [tex]\frac{15}{23}[/tex]. Reduce your answer to the lowest fraction.

A. [tex]\frac{75}{373}[/tex]

B. [tex]\frac{115}{465}[/tex]

C. [tex]\frac{93}{23}[/tex], or [tex]4 \frac{1}{23}[/tex]

D. [tex]\frac{23}{93}[/tex]


Sagot :

To find the quotient of [tex]\( \frac{5}{31} \)[/tex] divided by [tex]\( \frac{15}{23} \)[/tex], follow these steps:

1. Rewrite the division as multiplication by the reciprocal:

Dividing by a fraction is the same as multiplying by its reciprocal. Therefore, we rewrite:
[tex]\[ \frac{5}{31} \div \frac{15}{23} = \frac{5}{31} \times \frac{23}{15} \][/tex]

2. Multiply the numerators and denominators:

Multiply the numerators together and the denominators together:
[tex]\[ \frac{5 \times 23}{31 \times 15} = \frac{115}{465} \][/tex]

3. Simplify the fraction:

A fraction is simplified by dividing the numerator and denominator by their greatest common divisor (GCD). The GCD of 115 and 465 is:
[tex]\[ \gcd(115, 465) = 5 \][/tex]

Therefore, we divide both the numerator and the denominator by 5:
[tex]\[ \frac{115 \div 5}{465 \div 5} = \frac{23}{93} \][/tex]

4. Confirm the simplified result:

The fraction [tex]\(\frac{23}{93}\)[/tex] is in its lowest terms because 23 is a prime number and does not divide 93 except by 1.

Therefore, the quotient of [tex]\( \frac{5}{31} \)[/tex] divided by [tex]\( \frac{15}{23} \)[/tex], reduced to the lowest fraction, is:
[tex]\[ \boxed{\frac{23}{93}} \][/tex]

Answer: D.