Question
PSLE
The average height of a group of pupils was 121.8 cm. When Mr Neo measured and recorded the height of these pupils, he wrongly recorded one child's height as 108 cm when it should have been 180 cm. As a result, Mr Neo calculated the average height as 113.8 cm. How many pupils were there in the group?
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PSLE
The average height of a group of pupils was 121.8 cm. When Mr Neo measured and recorded the height of these pupils, he wrongly recorded one child's height as 108 cm when it should have been 180 cm. As a result, Mr Neo calculated the average height as 113.8 cm. How many pupils were there in the group?