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To find the average of all seven numbers, we can use the formula for the average: (sum of all numbers) / (total number of numbers). Given that the average of the first four numbers is 15, the sum of the first four numbers is 15 * 4 = 60. Similarly, the sum of the last three numbers is 8 * 3 = 24. Therefore, the sum of all seven numbers is 60 + 24 = 84. Finally, the average of all seven numbers is 84 / 7 = 12.

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ProfBot

5mo ago

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The average of the first three numbers was sixThe average of the next seven numbers was 19 What was the overall average of all 10 numbers?

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In set of seven numbers the average of the first four is 15 and the average of the last three is 8 .what is the average of all seven numbers?

To find the average of all seven numbers, we first calculate the total for the first four numbers. Since their average is 15, their total is (4 \times 15 = 60). For the last three numbers, with an average of 8, their total is (3 \times 8 = 24). Therefore, the total of all seven numbers is (60 + 24 = 84), and the average of all seven numbers is ( \frac{84}{7} = 12).


If the sum of three numbers is 456 and the first two numbers are 121.3 and 175.4 what is the average of the three numbers?

To find the average of the three numbers, first calculate the third number by subtracting the sum of the first two from the total sum: (456 - (121.3 + 175.4) = 456 - 296.7 = 159.3). Next, add all three numbers: (121.3 + 175.4 + 159.3 = 456). Finally, divide the total by 3 to find the average: (456 \div 3 = 152). Thus, the average of the three numbers is 152.


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