it rained on 2/5 of all the days last month. On 1/6 of these rainy days it thunderstorm. On what fraction of the days last month were there thunderstorms?

(2/5) * (1/6) = 2/30 = 1/15

Hala can ride her bike 7 1/2 miles an hour. How far will she ride in 3 hours? How far will she ride in 1/3 of an hour?

7 1/2 * 3 = 22 1/2 7 1/2 * 1/3 or 7 1/2 / 3 = 2 1/2

Well, thunderstorms are truly electrifying events, aren't they? Let's do some math to figure out the answer.

If it rained on 2/5 of all the days last month, and on 1/6 of those rainy days, there were thunderstorms, we can calculate the fraction of days with thunderstorms like this:

Fraction of rainy days with thunderstorms = (Fraction of days it rained) × (Fraction of rainy days with thunderstorms)
= (2/5) × (1/6)
= 2/30
= 1/15

So, it looks like thunderstorms happened on 1/15 of the days last month. Just remember to bring your umbrella and rubber shoes next time!

To find the fraction of days last month that had thunderstorms, we need to multiply the fractions of rain and thunderstorms together.

First, let's find the fraction of days it rained last month. We are told that it rained on 2/5 of all the days. So, the fraction can be written as 2/5.

Next, let's find the fraction of rainy days that had thunderstorms. We are told that thunderstorms occurred on 1/6 of the rainy days. So, the fraction can be written as 1/6.

To find the fraction of days with thunderstorms, we multiply the two fractions:

(2/5) * (1/6) = 2/30

Simplifying the fraction, we get:

2/30 = 1/15

Therefore, the fraction of days last month that had thunderstorms is 1/15.