If the arithmetic mean of the three numbers is 8, then the three numbers total 24. We are given m + n, leaving p to equal 24 – 15 = 9.

The minutes must be converted to hours which gives 11/12 hours. The total distance he runs is 11 miles. 11/(11/12) = 12.

To find the average you add all the games and divide by the number of games. In this case we have 112 + 134 + x = 246 + x. If we divide by 3 and set our answer to 132, we can solve for x by cross multiplying and solving algebraically. We can also solve this problem using substitution.

The formula for a weighted average is the sum of the weight x values divided by the sum of the weights.  Thus, for the above situation:

Average = (1 x 85 + 1 x 72 + 1 x 81 + 3 x 79 + 5 x 92) / ( 1 + 1 + 1 + 3 + 5)

= 935 / 11 = 85.

Since the first part of the equation is the average of 5k and 3l, and there’s two terms, we put 5k plus 3l over 2. This equals 50% of 4l, so we put 6l over 2 so they have common denominators. We can then set 5k+3l equal to 6l. Next, we subtract the 3l on the left from the 6l on the right, giving us 5k=3l. To get the value of k divided by l, we divide 3l by 5, giving us k= 3/5 l. Last we divide by l, to give us our answer 3/5.

There are five female cousins whose ages are 14, 22, 13, 12, and 20. 

Add these up and divide by 5.

14 + 22 + 13 + 12 +20 = 81

81 / 5 = 16.2

13 is the minimum value.  83 is the maximum value.  70 is the range.  44 is the median.

In order to find the arithmetic mean, add the numbers together and divide by the number of numbers.

(13+21+25+37+51+52+58+83)/8 = 340/8 = 42.5

The mean, or average, score is determined by adding up all the scores and then dividing by the total number of tests:

(97+86+67+75+89+95+93+75+81+88) / 10 = 846 / 10 = 84.6

In order to find the mean, add all the numbers together (131) and divide by the number of items (10) = 13.1

The question tells us that 50 was the average score of the 5 players, which means that 50 = total points / 5. So, the total points scored in the game must be 5 * 50 = 250.

Going through the answer choices, suppose all five players scored 75—then the total points would be 75 + 75 + 75 + 75 + 75 = 375, which is not 250, so five is not the correct answer.

Suppose four of the five players scored a 75—then the total points for players a, b, c, and d would be 75 + 75 + 75 + 75 = 300, and player e would have to score -50 for the total points to equal 250. Since player e's score cannot equal –50 (the problem says that scores are between 0 and 100), four is not the correct answer.

Now suppose that three of the four players scored a 75—then the total points for players a, b, and c would be 75 + 75 + 75 = 225, meaning d + e would have to equal 25 for the total points to equal 250. This scenario is possible in the game, if, for example, player d scored 12 points and player e scored 13 points. Therefore the greatest possible number of the 5 players who could have scored a 75 is three.