Question
PSLE
The average height of a group of pupils was 147.9 cm. When Mr Peh measured and recorded the height of these pupils, he wrongly recorded one child's height as 148 cm when it should have been 184 cm. As a result, Mr Peh calculated the average height as 143.9 cm. How many pupils were there in the group?
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PSLE
The average height of a group of pupils was 147.9 cm. When Mr Peh measured and recorded the height of these pupils, he wrongly recorded one child's height as 148 cm when it should have been 184 cm. As a result, Mr Peh calculated the average height as 143.9 cm. How many pupils were there in the group?