Essentially, the equation is 2000/x = 16/1
We can use cross multiplication to show that 2000 = 16x
x = 125
There are 125 teachers.
There are 309 dimes... think of it like this
5(d + 7) + 10d = 4670
5d + 35 + 10d = 4670
15d + 35 = 4670 then you take that and subtract on both sides cancelling out the 35
15d = 4670 - 35
15d = 4635
d = 4635/15
d = 309
So firstly, let's rearrange the data so that it's in ascending order:
{52,55,61,61,76,91,98,105,120}
Now let's first start with the mean. The mean formula is . Using our data, we can solve for the mean as such:
<u>The mean is (rounded to the whole number) 80.</u>
Next, let's find the median. The median is the number, when arranged in ascending order, that is in the middle of the set. If there are two numbers that are in the middle, you would just find the average of the two. In this case:
<u>The median is 76.</u>
Lastly, let's find the mode. The mode is just the number that appears the most in the data set. If all numbers appear only once in the data set, then there is no mode. In this case, since 61 appears more than once, <u>61 is the mode.</u>