erins summer vacation lasted 100 days. she kept track of the number of rainy days. it rained on 30 days. write a fraction and an equivalent fraction to show what part of all the days it rained.

30/100 = 3/10

To find the fraction that represents the number of rainy days, we divide the number of rainy days by the total number of days. In this case, we divide 30 (rainy days) by 100 (total days):

Fraction of rainy days = 30/100

To simplify this fraction, we can divide both the numerator and denominator by their greatest common factor, which is 10:

30 ÷ 10 = 3
100 ÷ 10 = 10

So, the simplified fraction would be:

Fraction of rainy days = 3/10

Now, let's find an equivalent fraction. To do this, we can multiply or divide both the numerator and denominator by the same number. In this case, let's multiply both by 10 to get an equivalent fraction:

3/10 × 10/10 = 30/100

So, an equivalent fraction to 3/10 would be:

Equivalent fraction = 30/100