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19 September, 08:06

The mean height of 3 boys is 150 centimeters. The mean height of 2 girls is 145 centimeters. Find the mean height of the 5 students.

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  1. 19 September, 08:48
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    It's 147.5.

    When you calculate the average you have to add all the numbers and then divided the answer by the amount of numbers.

    Ex. The average of 4, 7, 9, 1, 3, and 10 is 5.66 because 4 + 7 + 9 + 1 + 3 + 10 is 34 and then you divide by 6 (because there are 6 numbers) which is 5.66.
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