Hello everyone. Please don't leave. I am stuck in math, but i want to solve it by myself, but have a small question. So basically, there are 1,000 telephones made a day. They take 30 out and test them. It is brought to their attention that 9 are defective. How many are defective a day? that is the question. I am stuck on figuring out 30 times what equals 1000. I think it is like 33 or something, but i im off by a lot. Any help?

9/30 = 0.3 = 30%

0.3 * 1,000 = ________

uhhh.... 300????

Right.

Thanks!

You're welcome.

Sure, I can help you with that. To figure out how many telephones are defective in a day, we need to use proportions.

First, let's set up a proportion based on the information given. We know that 30 telephones are tested and 9 of them are defective. So we can set up the proportion:

30 tested phones / 9 defective phones = 1000 total phones / x defective phones

To solve for x, which represents the number of defective phones in a day, we can cross-multiply and solve for x:

30 * x = 9 * 1000

Now, to find the value of x:

x = (9 * 1000) / 30

To calculate this, simply multiply 9 by 1000 and then divide the result by 30.

So, x = 9000 / 30 = 300

Therefore, the number of defective phones a day is 300.

If you ever encounter a similar proportion problem, you can use the setup I provided to find your answer.