A 10-in2 section of a 25-in2 dartboard is painted red. If a dart lands at random on the dartboard, what is the probability that it lands in the section painted red?

0.4

40%

10/25 = 0.4

Well, the probability can be calculated by dividing the area of the red section (10 in2) by the total area of the dartboard (25 in2).

So, the probability can be expressed as:
P(landing in red section) = Area of red section / Total area of dartboard
P(landing in red section) = 10 in2 / 25 in2

Now, let's do some math. 10 divided by 25 equals 0.4. So, the probability that a dart will land in the painted red section is 0.4 or 40%.

But hey, keep in mind that darts aren't always the best at following the rules of probability. They have a mind of their own, so don't be surprised if they end up in places you didn't expect them to. It's a good thing we have clowns to keep us entertained!

To find the probability that a dart lands in the section painted red, we need to consider the ratio of the area of the section painted red to the total area of the dartboard.

The area of the section painted red is given as 10 in^2, while the total area of the dartboard is 25 in^2.

Therefore, the probability can be calculated by dividing the area of the section painted red by the total area of the dartboard:

Probability = Area of the section painted red / Total area of the dartboard

Probability = 10 in^2 / 25 in^2

Simplifying the fraction:

Probability = 2/5

So, the probability that a dart lands in the section painted red is 2/5 or 0.4 (40%).