Class height average
There were 21 pupils in the class, and arithmetically, the average height of these pupils was 163 cm. Calculate what the average height in the class will be if:
a) A 159 cm tall student was added to the class
b) A 169 cm tall student left the class
Your answer:
a) A 159 cm tall student was added to the class
b) A 169 cm tall student left the class
Your answer:
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You need to know the following knowledge to solve this word math problem:
statisticsalgebraUnits of physical quantitiesGrade of the word problem
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