Asked by tsn
The average height of a class of students is 134.7cm. The sum of all the heights is 3771.6 cm. There are 17 boys in the class. How many girls are in the class?
Answers
Answered by
PsyDAG
Mean = sum of scores/number of scores
134.7 = 3771.6/(x+17)
Solve for x. Hint: start by multiplying both sides by x+17.
I hope this helps. Thanks for asking.
134.7 = 3771.6/(x+17)
Solve for x. Hint: start by multiplying both sides by x+17.
I hope this helps. Thanks for asking.
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