Are these ratios equivalent? How do you know?

8/24 and 10/30

(1 point)
Responses

Yes, because cross products are equal.
Yes, because cross products are equal.

Yes, because they are not equal when both are simplified.
Yes, because they are not equal when both are simplified.

No, because cross products are not equal.
No, because cross products are not equal.

No, because they simplify to the same ratio.
No, because they simplify to the same ratio.

1 answer

To determine if the ratios \( \frac{8}{24} \) and \( \frac{10}{30} \) are equivalent, we can either simplify the fractions or use the method of cross products.

  1. Simplifying the fractions:

    • For \( \frac{8}{24} \), we can divide both the numerator and denominator by 8: \[ \frac{8 \div 8}{24 \div 8} = \frac{1}{3} \]

    • For \( \frac{10}{30} \), we can divide both the numerator and denominator by 10: \[ \frac{10 \div 10}{30 \div 10} = \frac{1}{3} \]

    Since both fractions simplify to \( \frac{1}{3} \), they are equivalent.

  2. Cross products:

    • The cross products of the two fractions are calculated as follows: \[ 8 \times 30 = 240 \] \[ 10 \times 24 = 240 \] Since the cross products are equal (both are 240), this also indicates the ratios are equivalent.

Given these two methods, the correct response is: Yes, because cross products are equal.